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There are many reasons why your computer won't start or boot into the Windows operating system. If your computer does not start or does not start, you will see or hear symptoms that indicate the general cause of the problem. If you're not sure what the problem is, seeDiscuss how to troubleshoot when your computer won't start or doesn't start up properly.
Startup Symptom: When booting up or booting up, the computer may display an error message on a black screen
Use this document if your LEDs are on, you hear the sound of a fan or hard drive spinning, but when you press the power button on your laptop, you get an error message on a black screen.
This problem can be caused by an error in the instructions sent from the BIOS to a hardware component (for example, keyboard errors) or by an incompatible device driver. Typically, these types of issues can be resolved by clearing the error message and then installing updated firmware for the critical component.
DO THIS FIRST: Perform a hard reset
If your computer suddenly stops booting properly, here's what to dodo a hard resetas the first procedure.
Startall peripheral devices and remove all USB devices and media cards. You want to test the computer, not the accessories!
StartAC adapter, remove the battery, and thenHold down the power button for at least 15 seconds..
reconnectAC adapter (but do not connect the battery),Presspower button,To look forbright LED lights closeZablokuj MayusaWNumlockkeys andTo listenthe sounds of a disk drive and a spinning fan.
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Search the Internet for a specific error message |
Actions when certain error messages appear on a black screen
Depending on where the error occurred during the boot process, you may be able to access the BIOS. If the BIOS cannot be accessed, you are limited to troubleshooting hardware issues such as memory or hard drive.
If any of the following error messages appear on a black screen, click the link for more detailed information on how to resolve the error.
The error message "PXE-E61: Media test failed" appears on a black screen.
The error message "No operating system" appears on a black screen.
Error message "162 - System Options Not Configured" appears on a black screen.
Actions when the error message is not listed above
If your error message is not listed, check the following websites for a specific solution:
If no error message appears, seeTroubleshooting The startup process stops and displays a black screen.
You can also continue with the general black screen troubleshooting sections below.
Fix common black screen errors on EFI PC
Extensible Firmware Interface (EFI) is available on select HP notebook computers manufactured in late 2008 and later.
To accessboot menuand troubleshooting options on an EFI computer, press the buttonactualand press the button immediatelyEXITkey. If your computer does not show the EFI boot menu, it may be a non-EFI computer.
In an EFI environment, you can choose from the following options:
- Press f1 for system information.
- Press f2 to run system diagnostics.
Pressf1DoSystem informationSystem information.
Pressf2startstart-up test.
Pressf3startrolling test.
Pressf4starthard drive test.
Pressf11to watcherror log.
Test if necessarylostContact HP Service and Support for instructions on ordering a replacement hard drive.
If all tests pass, the hard drive will not be damaged. Generally HPit will notreplace an under warranty hard drive that fails the HP hard drive self test.
- Press f9 for boot device options.
- Press f10 to configure the BIOS.
- Press f11 to perform system restore.
Fix common black screen errors on non-EFI computers
Extensible Firmware Interface (EFI) was not available on computers manufactured in 2008 and earlier.
When you try to start the computer, it seems to stop responding and a blank black screen appears, followed by a blue screen or the Windows logo. If you don't see a specific error message, there are a few things you can do to fix the black screen issue.
Remove the non-system drive from your computer
Follow these steps to remove all non-system drives and restart your computer:
Disconnect any eSata, USB or 1394 (Firewire) devices connected to the computer.
Remove any CD/DVDs or memory cards from the drives, if any.
- Hold the buttonActualbutton for30 secondsto turn off the computer. Then press and release the buttonActualbutton to turn on the computer.
observation:During startup, the computer checks various devices for the operating system in a predetermined order. The order used by the computer can be changed in the BIOS. For more information on changing the boot order, seeHP Notebook PCs - Configuring the Boot Sequence on an HP Notebook PC.
After removing the non-system drive:
If the computer boots normally and displays the Windows desktop, no further action is required.
If the computer continues to freeze and a black screen appears, continue restoring the BIOS to default settings.
Restore default BIOS settings
To restore the default BIOS settings, access the BIOS setup screen as follows:
Turn off the computer and wait five seconds.
pressActualto start the computer and press the button repeatedlyf10to enter the BIOS setup menu.
observation:
On some computers manufactured between 2002 and 2006, press the buttonf1to enter the BIOS settings.
In the BIOS setup screen, pressf9A key to select and load the BIOS.Default settingsinstitutions.
Pressf10DisgustingSave and close.
Use the arrow keys to selectYthen pressWalk intowhen askedExit Save changes?
Follow the instructions to restart your computer.
If the computer stops responding to a black screen, continue with the troubleshooting steps in the next section.
Run a memory test
Follow these steps to run the Memory Self Test:
Connect the AC adapter to the computer.
Turn off the computer and wait 5 seconds.
pressActualto start the computer and press the button repeatedlyf10to enter the BIOS setup menu.
useLeft arrowWcorrect arrowkeys for navigating through the menu selection iDiagnosis.
useDown arrowWArrow upkeys to choose frommemory test.
PressWalk into, and thenYto perform a memory test.
Press when the test is completef10DisgustingSave and closethen pressWalk intoDisgustingExit Save changes?.
Run the hard drive test
Many computer problems are due to mild errors (or reduced performance) of the hard drive. The HP Hard Drive Self Test fixes minor hard drive errors, but does not report any errors. After the test is complete, restart your computer to see if the test resolved the issue you were experiencing.
Follow these steps to test your computer's hard drive using the HP Hard Drive Self Test utility.
Connect the AC adapter to the computer.
Turn off the computer and wait 5 seconds.
pressActualto start the computer and press the button repeatedlyf10to enter the BIOS setup menu.
usecorrect arrowzLeft arrowkeys for navigating through the menu selection iPrimary hard drive self testchoice. Depending on your BIOS, it may be in the areaDiagnosiszTools.
To choosePrimary hard drive self testthen pressWalk intobutton to start the test.
observation:
The exact description of the options for your specific BIOS may vary slightly.
The hard drive self test performs aQuick testthen aextensive test. During each test, a status bar and the estimated completion time are displayed in the window. SeeHP Notebook PCs - Testing the Hard Drive with the Built-in Self-Testfor more information.
Test if necessarylostContact HP Service and Support for instructions on ordering a replacement hard drive.
If all tests pass, the hard drive will not be damaged.
If there is no physical problem with the hard drive or memory, try itReinstall the Windows operating system.
Alternative access to the hard drive test on newer laptops
If you have a computer with EFI preboot (Late 2008 and newer), start the computer and pressExitaccess keyEFI boot menu. then pressf2to chooseSystem Diagnosticsmenu and pressf4do onetest hard drive.
Reinstall the Windows operating system
If none of the above steps resolved the issue, you may have a corrupted operating system. Therefore, you need to reinstall the Windows operating system on the laptop. SeeHP Notebook PCs - Repair or Reinstall the Operating Systemfor more information.
If none of the above steps resolved the issue, contact HP for assistance.
What to do if the computer starts normally in Windows
After the troubleshooting process is complete and the Windows operating system starts normally, you should:
Run HP Assistant to update HP software and drivers.
Run Windows Update to update your operating system and software.
Run an antivirus program to remove any viruses.
For details, seeHP Notebook PCs: Update the PC after the issue is resolved.
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