Graphics driver crash and recovery

I have been somewhat recently(started less than a month ago, but I am not sure when it started as it has been getting progressively worse) having a problem with my display driver crashing and recovering whenever I play, as far as i can tell, any game. Runescape? Crash. World of diving? Crash. Crysis? Crash. Sometimes it plays for as little as 20 seconds before a crash (especially Runescape lately), sometimes it plays for an hour or so. Last night my computer restarted itself. Possibly started after my old graphics card died, and then i had been using onboard graphics until i got a cheap replacement card until i could afford a better one. The issue with that however is that I have this crash with more than one graphics card (boh a Geforce GTX 650 and a Radeon RXD460). I no longer believe it is the card that is causing the issue (i cleanly installed drivers after uninstalling old ones each time). I have bought a new PSU, thnking it was that (plus I wanted a semi-modular and bigger one anyway), but that didnt help either. I ran a syscheck and a memory test, and it only found a couple corrupt .dlls that it couldnt fix, and i tried replacing those but couldnt get it to stop finding those, despite following a tutorial to unregister and reregister the good dll. So I "upgraded" to windows 10, which still has not fixed the issue (even after updating drivers and such). The memory passed the memtest as well. I checked my Intel Quad Core with their tool for thier website, and that didnt come up with any issues. I also replaced the thermal paste on my CPU (it was kind of old) as well as some of the broken fans, and heat is not an issue. I have also run scans for viruses and malwaye (first tried spybot search and destro and avast, then uninstalled those which i had for years and got Bitdefender, which also found no issues. I also tried reseating everything.
My current setup is: Asus p5g41c-m motherboard with 8gb Dual-channel ddr3 @533MHz ram (dont remember the brand off the top of my head, 2 4gb sticks), Intel core 2 Quad Q6000 @2.40GHz, 40096MB ATI Radeon RX 460, 186GB Samsung SP2004c ATA harddrive (yes that is an old one), 2 TB Western Digital WDC WD20WARS-00MVWB0 ATA harddrive, EVGA 750 GQ power supply (brand new like a week ago), and Windows 10 64-bit. I am currently at a loss as to what to do anymore. I have tried more things than I have listed, I just can't remember all the things I have tried right now. Please help, I really want to get back to my gaming.