Startup Symptom: Computer displays a blue screen or continually re-starts
Use this document if the LED lights glow or you hear the sound of a fan or hard drive spinning, and the HP or Compaq logo displays briefly, but then the notebook stops responding and displays a blue screen. In some cases, the computer may be operating in Windows but suddenly crash and stop responding. In most cases, an error message is displayed on the blue screen, the computer does not respond to commands typed on the keyboard, and it is necessary to press and hold the power
button for 15 seconds or more, to turn off the computer.
The most common cause of this problem is conflicting instructions from multiple programs or drivers. Installing a new program that is not compatible with the hardware or another program may cause a blue screen error.
DO THIS FIRST - Perform a hard reset
If a PC suddenly fails to boot properly, you should perform a hard reset
as the first procedure.
Disconnect
all peripheral devices and remove all USB devices and media cards. You want to test the computer not the accessories!
Disconnect
the AC power adapter, remove the battery, and then press and hold the power button for at least 15 seconds
.
Reconnect
the AC power adapter (but do not connect the battery), Press
the Power button, Look for
glowing LEDs near caps lock
and num lock
keys, and Listen for
sounds of a disk drive and fan turning.
When a computer freezes and displays a blue screen it also displays an error message, however, if the computer is set to automatically restart on an error condition, the message may be cleared off the screen before you can see it. If you are unable to view an error message or the Windows desktop, or if the computer tries to reboot automatically, you can disable the Windows automatic restart feature. This will enable you to view any specific error messages.
Click Start
, right-click My Computer
, and then click Properties
.
Click the Advanced
tab.
In the Startup and Recovery
section, click Settings
.
Under System Failure
, deselect the Automatically Restart
check box.
Click OK
to close the Startup and Recovery window, and then click OK
to close the System Properties window.
Restart the computer.
Automatic restart is now disabled. When you restart the computer, if a specific start up error message is displayed, search the following web sites for a specific solution:
You may see one of the following error messages, click the link for the HP support document to view more detailed information about a particular error message.
If there is no specific error message on the blue screen, there are several things you can do to troubleshoot possible causes. You must be able to access Safe Mode with Networking and have a broadband internet connection to perform the following steps.
You can use Microsoft System Restore to reset the computer setting to a time prior to the occurrence of the blue screen error, called the "last known good configuration". There are three ways you can reset the computer to the last known good configuration:
To select a restore point using f8
to boot into Safe Mode and run a Microsoft System Restore, follow the steps below.
Turn off the computer and wait 5 seconds.
Press the Power
button to start the computer and repeatedly press the f8
key to enter the Windows Advanced Options Menu.
Use theUp Arrow
and Down Arrow
keys to select Safe Mode
, and then press enter
.
Wait while Windows files load.
Login at the Windows login screen.
After Windows starts, click Start
, type restore
into the search field, and then select System Restore
from the list to open System Restore.
On the System Restore window, click Next
, and then follow the on-screen instructions to select a restore point.
Your computer will now start into Windows using the last settings at a time when the computer was working correctly, undoing any recent settings changes that may have caused the current problem.
CAUTION:If you use HP Recovery Manager to perform a system restore, you cannot undo the restore.
To select a restore point using HP Recovery Manager, follow the steps below:
Press the Power
button to start the computer and repeatedly press the f11
key to launch HP Recovery Manager.
In the HP Recovery Manager window, click Advanced options
, and then select Microsoft System Restore
.
Click Next
, and then follow the on-screen instructions to select a restore point.
Your computer will now start into Windows using the last settings at a time when the computer was working correctly, undoing any recent settings changes that may have caused the current problem.
To select a restore point using the Last Known Good Configuration using Microsoft System Restore, follow the steps below:
Press the Power
button to start the computer and repeatedly press the f8
key to open the Advanced Boot Options window.
Use the Up Arrow
and Down Arrow
keys to select Last Known Good Configuration (advanced)
, and then press enter
.
Your computer will now start into Windows using the last settings at a time when the computer was working correctly, undoing any recent settings changes that may have caused the current problem.
NOTE:Using a System Restore Point to go to the last known good configuration may cause you to have to reinstall any recently installed software, if the software was causing the problem.
Many computer problems are related to soft failures (or degraded performance) on the hard drive. The HP Hard Drive Self Test will repair soft errors on the hard drive, but it will not report the errors. After the test is complete, restart the computer to see if test repaired the problem you may been experiencing.
Use the steps below to test the hard drive in a computer using the HP Hard Drive self test.
Plug the AC Adapter into the computer.
Turn off the computer and wait 5 seconds.
Press the Power
button to start the computer and repeatedly press the f10
key to enter the BIOS Setup menu.
Use the Right Arrow
or Left Arrow
keys to navigate through the menu selection to locate the Primary Hard Drive Self Test
option. Depending on your BIOS, this may be located below either Diagnostics
or Tools
.
Select Primary Hard Drive Self Test
, and then press the Enter
key to start the test.
NOTE:The exact wording of the option for your particular BIOS may be slightly different.
The Hard Drive Self Test performs a Quick Test
followed by a Comprehensive Test
. During each test, the window displays a status bar and an estimated time to completion. See
HP Notebook PCs - Testing a Hard Disk using the Built in Self Test
for additional information.
If any test fails
, contact HP service and support for instructions on how to order a replacement hard drive.
If all of the tests pass, the hard drive is not damaged. As a rule, HP will not
replace a hard drive under warranty that does not fail the HP Hard Drive Self Test.
If there is no physical problem with the hard drive or memory, then try reinstalling your Windows operating system
to troubleshoot the problem.
If computer does not boot into Windows, press the Power
button to start the computer, and repeatedly press the f8
key. On the Advanced Boot Options
screen, select one or more of the following options to resolve the startup problems. Select the options individually and press the enter
key to restart the computer.
Select Disable automatic restart on system failure
to view error messages.
Select Last Known Good Configuration (Advanced)
to return settings to an earlier point in time.
A blue screen error may occur after installing a software program that is not compatible or conflicts with an existing program. You can clear the blue screen error by uninstalling the program in the Safe Mode. You may also go to program manufacturer's web site and look for support information.
To uninstall the application in Safe Mode, do the following steps.
Turn off the computer and wait 5 seconds.
Press the Power
button to start the computer and repeatedly press the f8
key to enter the Windows Advanced Options Menu.
Use the
Up Arrow
and Down Arrow
keys to select Safe Mode
from the Advanced Boot Options menu and then press enter
.
When Windows starts in the Safe Mode, click Start
, Control Panel
, and then select Add or Remove Programs
.
Select the application or program from the list that was most recently installed.
Click Change/Remove
and follow the on-screen instructions to uninstall the application.
Once you have uninstalled the recently added program in Safe Mode, click Start
, and then Shut Down
to restart your computer.
If the computer starts up normally to the Windows desktop, no further action is necessary.
If the notebook continues to stop responding at the Windows splash screen, continue troubleshooting by proceeding to the next process.
A blue screen error may occur if the BIOS or a device driver is out of date or is not compatible with some other hardware or software component. Try updating the BIOS and device drivers to resolve the problem. To locate a BIOS or updated device drivers for your computer, follow the steps below:
Go to the
hp.com
web site. Click Support and Drivers
, select the Download drivers and software (and firmware)
option, and then enter the model number in the Enter a product name / number
field.
Click Go
to start the search, and then select the operating system that is installed on the computer.
Sometimes a blue screen error occurs because you do not have the latest updates for Windows. Microsoft may have an update for Windows to resolve the blue screen error. Be sure to install all of the latest Windows updates. For more information about using Windows Update, please see
HP PCs - Updating Drivers and Software with Windows Update
.
In XP, click Start
, then Control Panel
, and then select Windows Update
in the left panel.
In Vista, click Start
, type system
into the search field, select System
from the list, and then select Windows Update
in the left panel.
If none of the above actions has resolved this condition, you may have a corrupted operating system. Therefore, you need to reinstall the Windows operating system on the notebook. See
HP Notebook PCs - Repairing or Reinstalling The Operating System
for additional information.
If none of the above steps has resolved the issue, please contact HP for help.
To contact HP for support or technical assistance, click the Contact HP
link near the upper left corner of this web page, or go to
Hewlett Packard Technical Support
web page at www.hp.com/support
, select a Country or Region, a Language, and then click Contact HP
.