okay so I have removed my new graphics card and have replaced it with my old one, and all of my system instability has disappeared, bios is working fine etc. I assume it was a fault in the card, or is it all new cards in my machine?
Obviously I am now looking to purchase a new card, is there a limit to the graphics card I can by for my machine, not form factor wise, but like the actual specification of the card? could this have caused the problem?