My computer will not boot, and the problem at first was exactly as described as in this thread. Of course, then I hadn't found this awesome forum, so, since I had not many important files on it (It was mostly online games), I reformatted it, think to delete everything I had. But then, my HP computer had this option that only recovered system files, and kept the data files as it is. In any case, the computer was fixed. After a week though, it happened again. Exactly like last time, a Saturday, it went blank at startup again and like before, I had to reformat it. This happened one more time, where I used the complete restore, which deleted everything. I downloaded some protection (A Norton AV freeware my dad's company handed out, SpyBot, Ad-Aware) from my other computer and transferred it to this computer through an USB drive. As you guessed, it still failed. Next, I tried formatting from a disk, so maybe a virus latched on to my H drive, the system restore drive. I did that, installed the protections, and added Comodo firewall. It still happened, with even less interval in between. Finally, I downloaded AVG antivirus, scanned, and found nothing. So I decided to search the internet for maybe similar problems and wandered upon the thread in the beginning of the post. I followed a link to Microsoft, and applied the procedures. Yesterday, only a day after I it temporarily fixed my computer, the black screen struck again. Then I reapplied the steps, and only 2 hours later!!! It happened again. I decided this is going too far, and wanted to see if anyone of you can help me.
Computer: HP Pavilion a1100y, windows, 1k RAM from 2 sticks, GeForce 5200 video card.
Another note, when I transferred some .exe files from this to the other computer, my dad said it experienced the same problem. This lead me to believe it might be a virus, but somehow escaped all those scanners I installed. Please help me solve this annoying problem.