What i have done:
I have installed reinstalled the software/drivers 10 times over. Even with out the software installed problem still persists.
Reinstalled damaged old card and CPU is normal.
Checked for infections
Opened BIO's and looked to change the primary video adapt. ONBOARD makes the bios screen not even show. PCI i think was default, PCI-E is now current.
This is my first time installing a card so am i doing something wrong? A few times the machine will boot normal, or other times will become stable after hours of being opened.
it's a compaq presario sr1639uk
GeForce GT520 1gb DDR3