Compaq Desktop Computer Only Lights N Fan Turn on No Boot

Letourneau Thessell – January 07, 2022

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H.P. PCs - Computer does not start (Windows 10)

This document provides possible solutions to common computer startup issues. Follow the instructions in this document gradation-away-step to help isolate the problem and receive the most appropriate help.

Get rid of discs and devices

Earlier troubleshooting inauguration issues, remove or unplug all discs and devices from the data processor.

1. Turn off the reckoner.

2. Dispatch any discs and USB devices.

3. Hit memory card game from the card reader time slot.

4. Disconnect all non-essential devices such equally printers, scanners, and external hard drives.

5. Allow for only the mouse, keyboard, and monitor connected.

6. After you ingest removed wholly discs and devices, turn connected the computing device.

• If the reckoner starts, reconnect devices unity at a time to mold which platter or device is causing the problem. If the issue is solved, troubleshooting is complete.

• If the computer distillery does not start and exhibits the synoptical problem, press and book the power clit to turn off the computer. Do non link up anything, and continue troubleshooting.

Perform a hard readjust

Many startup errors and other problems force out be resolved by decreasing the amount of business leader stored in hardware components. Decreasing stored tycoo is sometimes referred to As a rocky reset.

After you have completed these steps, if the data processor inauguration issue is resolved, buy the farm to , so go to HP PCs - Victimisation H.P. Patronize Assistant (Windows) to update completely device drivers.

Power reset your screen background electronic computer

Perform a power reset on your desktop computer.

1. Twis off the reckoner.

2. Disconnect any peripheral devices, and then unplug the magnate cord.

3. With the world power electric cord unplugged, press and hold the Power clitoris for roughly 15 seconds.

4. After you drain the capacitors, connect the power cord. Pass on peripheral devices disconnected.

5. Turn along the computer.

Top executive reset a laptop with eradicable battery

Perform a force reset on your notebook with a removable battery.

1. Turn out the computer, so disconnect the power cord.

2. Disconnect some peripheral devices, and then remove the electronic computer from any interface replicator or docking station.

3. Take the battery from the computer.

4. With the battery and might cord unplugged, press and hold the Power button for approximately 15 seconds.

5. After you drain the capacitors, atomic number 75-insert the battery, so connect the power cord. Leave peripheral devices disconnected.

6. Turn on the computer.

Magnate reset a laptop computer with a non-removable battery

Perform a power readjust on your notebook with a non-removable battery.

1. Turn off the computer, and then unplug the power cord.

2. Disconnect some peripheral devices, and so remove the information processing system from any port replicator or docking place.

3. With the king cord unplugged, printing press and hold the Power button for about 15 seconds.

4. After you drainage the capacitors, ballyhoo in the power corduroy. Leave peripheral devices split.

5. Excite the computer.

Run hardware diagnostic tests

Make sure that the issue is non hardware related away playacting diagnostic tests.

1. In Windows, search for and open the HP Microcomputer Hardware Diagnostics for Windows app.

   If the app is not installed on your computer, download the latest version from the HP Personal computer Hardware Diagnostics website.

2. On the important bill of fare, click System Tests.

3. Click the System of rules Fast Test check.

4. Click Run once.

   While the trial run is running, the time unexpended and test result for from each one component displays on the sieve.

5. If a factor fails a test, write down the failure ID (24-digit code) and contact HP Client Support. The information is too available in the Test Logs on the main menu.

   If no organization portion failed, continue with these steps.

6. In the HP Microcomputer Hardware Diagnostic app, click System Test, and past click System Extensive Test. The Extensive Test might guide several hours to complete.

• If an issue is not found, continue to the next stride.

• If a component fails a test, write down the nonstarter ID (24-digit code) and contact HP Customer Support.

Refresh or reset your PC

Usance the Microsoft Refresh your PC feature to reinstall Windows without affecting your personal files, apps, OR many of your settings.

1. On the Choose an option screen, click Troubleshoot.

   If your computer does non surface to a blue Prefer an option screen, skip this tone and attend HP Notebook PCs - Advanced inauguration troubleshooting (Windows 10) Beaver State HP Desktop PCs - Advanced inauguration troubleshooting (Windows 10) for further troubleshooting options.

   

2. Click Refresh your PC.

   

3. Dog Close.

   

4. Wait for Windows to open, and then survey any connected-screen out operating instructions.

   • If the computer starts and opens Windows, you are done.

   • If the computer does not start and opens to the Choose an option screen, go to the next educational activity.

5. On the Select an option silver screen, click Troubleshoot.

6. Select Reset your PC.

   

7. Click Next.

   

8. Select the speedy option to remove your personal files.

   CAUTION:

   Your personal files and settings are destroyed by performing this step. Make sure you have backed up all your fundamental files before continuing. Do not continue if you have important files on the disc drive that sustain not been supported. You might want to seek a professional data recovery service to restore your files.

9. Wait for Windows to open. Survey any on-screen instructions.

   • If the computer starts and opens Windows, you are through.

   • If the computer does not start up and opens to the Choose an selection screen, continue to advanced troubleshooting options.

Advanced troubleshooting

If the previous stairs did not adjudicate the computer startup issue, go to the advanced troubleshooting surgical incision for your computer type.

• Horsepower Notebook PCs - Precocious startup troubleshooting (Windows 10)

• HP Background PCs - Advanced startup troubleshooting (Windows 10)

HP Notebook PCs - Advanced inauguration troubleshooting (Windows 10)

Complete these advanced troubleshooting procedures to try to resolve inauguration issues with your notebook computer PC.

Troubleshoot specific startup issues

Find a symptom that matches your computer's status.

LED lights eye blink merely the computing machine does not kickoff

HP and Compaq notebook computers use blinking LEDs to identify startup errors. If the LEDs winkle (usually 1 to 8 blinks in a series) near the caps lock surgery num lock keys, expire to H.P. Desktop PCs - Computer Does Not Start and Emits an LED or Beep Encipher.

Note:

If a blank AC adaptor light blinks when a red-hot notebook computer is used for the first time, the battery is still in Shipping Mode. To resolve this issue, turn off the notebook, connect the notebook to AC power, allow the battery to charge for at to the lowest degree 30 minutes, and then start the computer.

The computer starts, but the block out is blank or unresponsive

When pressing the exponent button, LED lights blink or turn on, a fan spinning sound is heard, but the riddle remains black, and the notebook does non start.

If the computer is on, but the screen stiff space, go to HP Notebook PCs - Computer Starts but Covert Clay Blank (Windows 10, 8).

The computer does not have power (no disturbance or lights)

If there is none noise from the estimator case or fans, the lights on the reckoner coiffure not wind up (including keyboard LEDs), and the shield is not receiving a video signal, your computer might not be receiving power. Test the Atomic number 89 transcriber.

1. Confirm that the AC power adapter is a real HP depart. Do non use a third-party AC power adapter with an HP computer.

   

2. Determine the adapter electric power by look near the bottom of the adapter.

   Note:

   Using an Actinium adapter with a lower wattage than the computer requires bum make issues. E.g., the CPU clock rate might constitute reduced to save power, which might cause programs to run slower Oregon the AC adaptor to become warm to the touch.

   

   

3. Correspond the AC power adapter for legal injury. Damaged components, care the AC adapter housing or the thole in the power connector, might require an HP-certified repair. Check the loge, cord, pins, and plugs for damage.

4. Substantiate that the wall outlet is functioning in good order. Plug a lamp OR device that you know to be working into the Sami wall outlet you plan to use for the Atomic number 89 adapter.

   • If the lamp or other device works, the wall outlet is employed correctly. Go along with these steps.

   • If the lamp or gimmick does not lic, hold on examination wall outlets until you find ane that whole kit, and then go forward with these steps. Exercise not usage a power strip, surge protector, or subordinate power source.

5. Plug away your AC adapter into the functioning wall outlet and start out your computing machine. If the reckoner does not start, continue using these steps.

6. If you have access to a different AC adapter or power gang that is studied for the computer, connect it to the computer and try to start the computer. If you have access to to a higher degree extraordinary computer, sustain that you are victimization the correct AC arranger.

   CAUTION:

   Use an Ac adapter that meets the power requirements and has the correct character of connector to avoid damaging the computer. On newer notebook computer models, connecting the wrong adapter to the notebook might lawsuit the power LED lights to blink but non power on the computer.

   If the computer does non start, continue with these steps.

7. Part with the reckoner. If the computer does non turn connected, preserve using these stairs.

8. Remove the power cord from the AC adapter for approximately 5 to 10 seconds, then reconnect the power cord to the AC adapter. Do secure that the power line fits tightly into the Ac adapter inlet.

9. Verify that all cords and connectors are secure between the power cord, AC adapter, and figurer. Start the computer.

   If the reckoner does not go connected, preserve with these steps.

10. Test for a discharged Oregon defective battery that might foreclose the AC adapter from provision enough world power to start the computer. Remove the notebook battery, link up the AC adapter to the notebook, and past turn connected the computer.

    Inauguration issues and possible actions

    Condition	Possible action
    LEDs do not turn on, and the fan or Winchester drive does not spin	The AC adapter power necessitate to be replaced
    LEDs plow on and computer starts	The battery mightiness postulate to be replaced
    LEDs hinge upon but computer does non start	Go to Horsepower Background PCs - Computer Does Not Start and Emits an LED OR Beep Computer code

    Note:

    You dismiss also try these steps with an tack AC adapter that has the correct wattage and connector.

    If the computing machine does not turn on, continue with these stairs.

11. Test for a defective AC adapter that might non load the battery. This could prevent the information processing system from starting victimisation lonesome battery power. Connect the AC adapter, allow the computer to complaint for 30 minutes or more, disconnect the Alternating current adapter, and then prove to start the calculator. This can likewise be done with a amply charged battery from another computer.

    Startup issues and conceivable actions

    Stipulate	Possible action
    LEDs do not turn on on, and the devotee or hard drive does non gyrate	The AC adapter might need to personify replaced
    LEDs turn on and computer starts	The battery power need to be replaced
    LEDs turn on but computer does not start	Go to H.P. Background PCs - Computer Does Non Get-go and Emits an LED operating room Beep Code

    If the AC adapter and electric battery tests some result in the LEDs not turning on and the devotee and hard get not spinning, thither might be an issue with the system board, which could need service from H.P..

12. If components are defective and the computer is low warranty, contact HP for further assistance. If the computer is not nether warranty, belong to HP Consumer Notebook PCs - Ordering HP certified replacement parts to regulate a replacement part.

The computer locks up at the Horsepower or Compaq logo screen or the Windows loading screen

If the estimator locks heavenward at the HP or Compaq logo screen or the Windows loading block out, try cleaning the estimator vents with compressed air.

Restart the reckoner. If Windows 10 opens, you are done. If Windows 10 does not open, go to HP PCs - Testing for hardware failures in Windows 10.

An error message is displayed on a illegal screen

Windows does not set about and an error is displayed on a Afro-American test. If the error message lists a hardware component, such as a fan or BIOS, test those components and service as necessary. Information technology might also help to search the internet using the exact error text edition.

Errors involving the hard drive or elemental rush device are arsenic follows:

• Boot device non set up

• Disk Boot Failure

• Not-system disk error (pretend sure that you have separate discs and USB reposition devices)

• OS Not Found

• PXE-E61: Media Test Failure

• Astute Failure Imminent / Imminent Heavily Disk Bankruptcy

For any of these errors, use the following steps:

Greenbac:

Removing and reseating the Winchester drive mightiness likewise solve some hard drive errors.

1. Disconnect any USB or 1394 (Firewire) devices attached to the computer.

2. Remove whatsoever CDs or DVDs from the disc drives.

3. Press and hold the power button for 5 seconds to turn out the computer.

4. Trip the electronic computer and immediately press the f10 key repeatedly, almost once every arcsecond, until the BIOS Setup Utility opens.

5. Press the f9 key, select Yes, and then press enter to restore the BIOS to the default settings.

6. Use the arrow keys to quality the Diagnostics carte.

7. Use the arrow keys to select Elemental Hard Disk Self Test, and then agitat enter to start the test.

   • If the test fails, the Winchester drive might need to be replaced. Write downward the failure Idaho (24-digit cipher) and contact HP Customer Support to set up service or to bear a replacement arduous ram down conveyed to you. The information is also available in Test Logs on the main menu. If the data processor is out of warrant, information technology should be serviced or the herculean drive should be replaced.

   • If all tests pass, resume the computer. If the error is solved, you are done. If not, attend Troubleshooting other issues with computer non starting.

An error message is displayed on a dark screen

To learn more about troubleshooting blue screen error messages, project the following document.

HP PCs - Error Messages Display on a Blue Screen (Windows 10)

Troubleshooting other issues with computer non start

If none of the previous symptoms mate the one on your computing device, use the following procedures to hear to wor the issue.

Remove and reseat the memory modules

If the memory modules are not fully sitting, it can cause computing and performance problems. These problems can make up resolved by removing and reseating the modules.

Note:

Your computer might look different than the following computer, merely the steps are the same.

1. Turn slay the computer and disconnect the AC arranger.

2. Remove the cover to access the computer storage.

   Note:

   Some computers might not have a cover that provides access to the memory. Have the computer serviced if you cannot access the memory.

   

3. Bump off complete remembering modules from the computer.

   

4. Reinsert altogether computer memory modules.

5. Replace the service cover, bombardment, and AC transcriber.

6. Bend connected the information processing system.

   • If the computer starts, you are done.

   • If the computer does non bug out, continue to the incoming procedure.

Perform a System Restore to resolve an release in Windows

If the emergence is recent, restore the information processing system to a point before the problem began, to resolve the issue.

Turn to HP PCs - Using Microsoft Organization Restore for many information.

Additional resources (Notebook computer PCs)

H.P. Screen background PCs - Advanced inauguration troubleshooting (Windows 10)

Complete these advanced troubleshooting procedures to judge to resolve startup issues with your desktop PC. Happen a symptom that matches your computing machine's condition.

The computer does not have power (none noise, none lights)

If there is No noise from the computer case or fans, the lights on the computer do not depend on (including the keyboard LEDs), and the CRT screen is not receiving a video signal, your computer might non be receiving power. Test the AC adapter.

CAUTION:

Use an AC adapter that meets the power requirements and has the accurate type of connector to stave off damaging the computer.

1. Confirm that the AC world power transcriber is a genuine HP part. Coif not use a third-political party AC power adapter with an HP computer.

   

2. Watch the adapter wattage away looking near the bottom of the adapter.

   Note:

   Using an Alternating current adapter with a glower wattage than the computer requires can cause issues. For instance, the CPU clock rate might be reduced to save power, which might cause programs to flow slower or the Ac adapter to become warm to the match.

   

   

3. Check the AC superpowe arranger for damage. Damaged components, equal the AC arranger lodging or the pin in the ability connector, might require an Horsepower-certified repair. Check the box, cord, pins, and plugs for damage.

4. Confirm that the rampart outlet is functioning decently. Plug a lamp or device that you acknowledge to be working into the same wall release you plan to use for the AC adapter.

   • If the lamp or opposite twist works, the wall outlet is working correctly. Keep going with these stairs.

   • If the lamp Oregon twist does not work, celebrate examination fence outlets until you find unmatchable that works, so continue with these steps. Act non habit a power strip, surge suppressor, or substitute baron source.

5. Sparking plug your Actinium adapter into the functioning wall outlet and start your computer. If the figurer does not go, continue using these stairs.

6. If you have a unusual Ac transcriber or power pack that is designed for the computing device, connect it to the computer. If you have Thomas More than incomparable figurer, name sure that you are using the correct Alternating current adapter.

7. Try to start the computer.

   • If the computing machine starts, you are finished.

   • If the computer does not start, continue with these steps.

8. Remove the power cord from the AC adapter for 5 to10 seconds, and so reconnect the business leader cord to the AC adapter, qualification sure that the power electric cord fits tightly into the AC adapter inlet. Make sure that the connections between the computer, power electric cord, Actinium adapter, and AC outlet are secure.

9. Try to start the estimator. If the computer does not turn on, the AC adapter might be defective.

   If the AC adapter is defective and the computer is under warranty, contact HP Customer Support for boost aid. If the calculator is not nether warranty, go to Horsepower PartSurfer to order a replacement part.

The computer starts, but makes beeping sounds

Too sounds occur when a describe happening the keyboard is stuck, a computer memory DIMM operating theater ambitious drive cable is not seated properly, or a component on the system board has failed.

Disconnect the mouse and keyboard, so resume the computer. If the beeping noises stop, repair or replace those devices. To find out more information about resolving a problem with beeping sounds, go bad to HP Screen background PCs - Computer Does Not Set off and Emits an LED or Too Code.

The computer starts, but the screen is blank operating theater unresponsive

If the monitor is on, but the screen remains blank when you turn off on the computer, or if an wrongdoing subject matter stating that a video signal is not detected is displayed on the screen when you depend upon both the monitor and computer, go to the favourable document.

HP Desktop PCs - Computer Starts but Screen out Remains Blank (Windows)

The electronic computer locks upfield at the HP or Compaq logotype screen or the Windows burden screen

If the computer locks up at the H.P. or Compaq logo screen operating theatre the Windows loading screen, try cleaning the computer vents with compressed air.

Re-start the computer. If Windows 10 opens, you are done. If Windows 10 does not open, extend to H.P. PCs - Examination for hardware failures in Windows 10.

Check whether the disc drive is sensed in BIOS

Confirm that the hard drive is noticed in the BIOS.

1. Hit or disconnection all discs and devices from the computer, except for the mouse, keyboard, and reminder.

2. Turn on the computer and immediately press out the f10 significant repeatedly, about once every minute, until the BIOS apparatus tool opens.

3. Use the arrow keys to select Storage, select Gimmick Configuration, and then press enter.

4. Confirm that a hard drive is listed under Hard Disk.

   

   • If the Winchester drive name displays, decease the BIOS without saving any changes, and go to HP PCs - Resetting Your Computer (Windows 10).

   • If the hard-boiled ram down call is missing, surgery Auto operating room None displays, exit the BIOS without saving any changes, and then undergo the procedures for when the hard drive is non detected in BIOS.

Winchester drive is not perceived in BIOS

See the procedures for your type of computer.

Disc drive is non detected in BIOS (Desktop PCs)

Troubleshoot start up-up problems when the hard drive is not detected in BIOS connected a desktop computer.

Reset the BIOS

Reset the BIOS to bring i dependable that the BIOS settings are precise.

1. In the Electronic computer Setup window, use the arrow keys to select the File tab.

2. Use the arrow keys to select Apply Defaults and Exit, and then press enter.

   

3. Select Yes, and then press enter.

4. Press the power clitoris for leastways five seconds until the computer turns off.

5. Disconnect the power electric cord.

6. Press and hold the power button for five seconds.

7. Reconnect the power cord, then turn back on the computer.

   If the startup problem still exists, continue with the next step.

Disconnect and reconnect the hard drive cable

Remove and reseat the hard drive cables.

CAUTION:

This product contains components that arse be damaged by electrostatic discharge (ESD). To reduce the chance of ESD damage, work over a noncarpeted floor using a undynamic dissipative work surface (such atomic number 3 a conductive foam pad) and wear an ESD articulatio radiocarpea flog connected to a grounded surface.

1. Remove the side panel by loosening the side board screws and sliding the panel to the back and hit the computer.

   

2. Get the power cable connected to the hard drive.

3. Disconnect and reconnect the power cable.

   

4. Find the information cable connective to the hard drive.

5. Disconnect and reconnect the data cable system to the effortful drive.

6. Find the data cable connection on the system display board.

7. Disconnect and reconnect the data cable from the connector happening the arrangement board.

8. Supervene upon the sidelong impanel.

9. Plug the power telegraph back into the computer.

10. Turn happening the computing machine.

    • If the problem persists, try a different SATA connexion on the system board.

    • If the disc drive is still not detected in the BIOS, replace the hard drive.

    • If the challenging drive is heard in the BIOS just the calculator hush does not start to Windows, reseat the memory modules.

Remove and reseat the memory modules

Remove and reseat the memory modules in the computing machine.

CAUTION:

This product contains components that can represent damaged past electrostatic discharge (ESD). To reduce the chance of ESD damage, beat up a noncarpeted floor using a static dissipative work surface (such as a semiconducting foam slog) and wear an ESD wrist strap connected to a grounded surface.

1. Turn off the computer and gulf all cables leave out the power cable. Make a short letter of the cable locations.

2. Disconnect the power cable's length, and then press the power release.

3. Remove any screws that secure the panel to the computer.

   

4. Slide turned the panel to gain access to the inside of the computer.

   

5. Pull out, and then weigh down the property clips that retain the memory modules. The memory modules crop up slightly out of the socket.

   

6. Replace each memory faculty past aligning the memory module so the small notches happening the lour edge line up with the tab on the socket.

   

7. Push continuous weak on the top ends of the storage module until the memory module is fully seated in the socket. The retaining clips on the ends of the socket lock away into place when the memory module is properly seated.

8. Replace the Service concealment and reconnect the tycoo cord.

9. Plow happening the computer.

   If the computer does not start, go to Do a System Restore to resolve an issue in Windows.

Disc drive is non detected in BIOS (All-in-One PCs)

Troubleshoot start-up problems when the tough drive is not sensed in BIOS on an All-in-United computer.

Reset the BIOS

Reset the BIOS to make sure that the BIOS settings are adjust.

1. In the Computer Frame-up window, employment the pointer keys to select the Indian file tab.

2. Exercise the arrow keys to select Apply Defaults and Exit, and then press participate.

   

3. Select Yes, and then press enter.

4. Campaign the power button for at the least five seconds until the computer turns cancelled.

5. Disconnection the power cord.

6. Press and hold the power button for five seconds.

7. Reconnect the power corduroy, and then excite the computer.

   If the startup problem still exists, continue with the future step.

Reseat the hard drive

Reseat the hard labour.

Replacing the hard drive

Warning:

The edges of metal panels canful cut bark. Be careful not to slide skin along any interior metal edge of the computer.

Carefulness:

This product contains components that can equal hurt by electrostatic discharge (ESD). To reduce the encounter of ESD damage, work over a noncarpeted floor, use a static dissipative work come up (such atomic number 3 a semiconductive foam pad), and wear out an ESD radiocarpal joint strap connected to a grounded coat.

Note:

For detailed instructions, go to the H.P. Customer Support website, select your country or region, and so enter the computer pose number. Search for replacing the stale drive.

1. Remove the back unmerciful drive covers.

2. Remove any screws that secure the disc drive to the chassis.

3. Gulf the cables from the herculean ram down.

4. Elevator the hard force out of the electronic computer.

5. Reinstall the disk drive, and then turn on the computer. The computer displays the logotype screen.

If the startup trouble still persists, the computer plausibly requires military service. Contact HP Client Support, because the disc drive or system board might be defective.

Readjust your computer

If the sound is non working properly, reset your computer.

Perform a System Restore to resolve an takings in Windows

If the issue is recent, restore the computing machine to a point before the problem began, to resolution the issue.

Get to HP PCs - Using Microsoft System Restitute for more entropy.

Additional resources (Background PCs)

If you cannot find a solution, contact HP Corroborate for further assistance or to accept the computer serviced.

For more than info on how to resolve zero boot and power issues, go to the following HP support documents:

• HP PCs - The computer restarts unexpectedly (Windows 10)

Compaq Desktop Computer Only Lights N Fan Turn on No Boot

Source: https://support.hp.com/id-en/document/ish_3974055-3873564-16

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