I am working on an older system that was built in 2012. Originally Windows 8, later upgraded to Windows 10. This PC has a strange issue I have not encountered before. While gaming and only while gaming the system will randomly freeze. Sometimes with screeching audio, sometimes not. However, when this occurs you have to do a hard reboot as the system is completely unresponsive. This where the weird part starts. Upon rebooting you no longer have use of the video card, the display shows nothing. I have to unplug and remove the card from the sytem. Plug into the onboard video and boot the system. At this point it boots just fine. Once I get to the logon screen I then shutdown the system, reinstall the card and boot again. Of course it now boots just fine. When this first occured we thought the video card had died because the system would boot with no display after the intial sytem freeze. So we bought a new card and it just kept happening. This is when I figured out the process to get it to work because I couldn't believe both cards were bad. The issue is recent and so it only occured in Windows 10. I bring this up because I was wondering if Windows 10 has had an upgrade that may have caused some compatability issues with the MB bios which was last updated in 2013. I was also thinking it might be an issue with the PCI-E slot or maybe the PSU. What do you guys think?
Intel BOXDZ68BC LGA 1155
I5 2500k
GTX 560ti/ GTX 960
8gb Gskill Ripjaws DDR3 1600 dual channel
Crucial M4 128gb SSD
WD Black 500gb
Corsair TX750 PSU
Intel BOXDZ68BC LGA 1155
I5 2500k
GTX 560ti/ GTX 960
8gb Gskill Ripjaws DDR3 1600 dual channel
Crucial M4 128gb SSD
WD Black 500gb
Corsair TX750 PSU