Why my taptop does not wanna work
It turns on but then it goes to a blck screen with this blinking line (-) in the top left corner
nisha, sounds like it is not finding the OS. This could be caused by a corrupted OS or a bad hard drive. Access your BIOS on startup and see if it recognizes your hard drive. Then set the boot order to boot from Optical drive and insert a system disk or a restore disk if you have it. See if that will show any results.
here is what Compaq/HP says:
"Hard Drive (HDD) & Solid State Drive (SSD) Diagnostics HP Diagnostics
In the event you experience hard or solid state drive issues, the first step is to select the f2 function key when booting up the system. This diagnostic routine detects any faults and issues that can cause the drive to fail.
Note: The short/Basic and long/Full versions have been combined into one.
When initiated, the diagnostics perform the following steps:
Runs the short/basic test. If no errors occur, the long/full test automatically runs.
If no errors occur, S.M.A.R.T. attribute checking automatically runs.
If a fault is detected in either of the tests, the process halts and a Failure ID or Code is displayed.
Note: The diagnostics may be aborted at any time by pressing the Esc key.
Note: The f2 Self-Test is available through the commercial notebook system BIOS. Please visit the HP Web site at http://welcome.hp.com/country/us/en/supp... to download the latest BIOS for your product. See the UEFI section below to install the more advanced diagnostics.
This was helpful for me recovering my Compaq CQ62:
The COA was scratched up so the app listed was a real help.
Reformatted and installed in less than an hour.
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