A blue screen or Windows serious error may occur immediately after a startup or boot with a stop code of 0x77 or 0x7A, indicating the following possibilities:
Bad sectors on the hard disk
Defective or loose cabling
Improper SCSI termination
Controller not seeing the hard disk
Another device is causing a resource conflict with the storage controller
The blue screen may cause a restart.
This failure is related to a failure in the hard drive subsystem. Please perform the following steps to diagnose the error:
Step 1: Back up your data
Use the following steps to back up your most important personal data:
then My Computer
Double-click the DVD/CD-RW drive.
Copy all of your important files to this folder using COPY and PASTE.
When complete, click Write these files to CD
from the CD Writing Tasks menu. When this process is complete continue to Step 2.
Step 2: Test your hard drive
Use the following steps to test your hard drive:
Restart the notebook PC.
When the HP or Compaq logo screen displays, press the F10
key repeatedly. The System BIOS Options Menu will appear.
NOTE:On some models that use UEFI instead of BIOS, no HP or Compaq logo displays during start up. If you are required to press key in the beginning stages of start up (when the logo normally appears on other models), do so as soon as the notebook starts. There may also be a text message that prompts you to press a specified key when the message appears.
When the System BIOS Options Menu is displayed, select Tools
using the arrow keys.
Select Hard Drive Test
The hard drive test will run a short test and a long test. The entire test may take 45 - 60 minutes to complete. To properly diagnose the hard drive, the entire test must
If an error was detected, please contact HP service and support to schedule a repair.
If the test passed, keep using the notebook PC. If you experience further HARDWARE_DISK serious errors contact HP service and support to schedule a repair.