Many computer problems are related to soft failures on the hard drive. The comprehensive portion of the HP Hard Drive Self Test repairs soft errors on the hard drive, but does not report the errors. After the test completes, be sure to restart the computer to determine if the test repaired any problems you are experiencing with your computer.
Plug the AC Adapter into the computer if it is not already connected.
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 find the Primary Hard Drive Self Test option. Depending on your BIOS, this may be found below Diagnostics or Tools.
Select Primary Hard Drive Self Test, and then press the Enter key to start the test.
Figure : Example of a Primary Hard Disk Self Test screen
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.