|Notebook Compaq CQ50-111LA.|
Worked perfect until one day it would not boot anymore. The Compaq logo shows on the screen, there is a message saying "Press the ESC key for Starup Menu" and then the screen goes black (but powered, you can see the normal pale light) and stays there forever.
The first two days this happened you could go into the BIOS setup, run memory test, HDD test and all were fine. Now, you cannot even go into the BIOS, same issue with screen going black.
No error message, nothing.
Bootable CDs or pen drives have the same issue. I tried removing the battery, hard drive, optical drive, same thing.