Hey there. I have a self built pc. The original build was made back in 2013 and it was a solid running computer. Since then I have put some new hardware on and additional software here and there like in normal use but I've been having some real problems as of late. The original build was on a Asus P8Z77-VPro motherboard Intel i5-3570 CPU @ 3.40GHz Nivida GTX 650 GPU 2× 4GB DDR3-1600 Elpida ram 64bit windows 7 home prem. The PC ran great and I was able to play my demanding games. I later added a AMD Radeon R9 270x and two PNY 8GB ram cards. I stared having problems with all my games. After about an hour of play the game would crash saying out of memory so I decided to go back to what worked and I still am having the same problems. I've tried researching the problem but none of the fixes have worked for me. So please help I need my PC back to a good working condition. Error is as follows: "The instruction at 0x005eb22a referenced memory at 0x00000954. The memory could not be read."