Hello, I've been having some frequent BSODs for the past couple of months. They usually happen when I play games but I've had them happen at other times too. A few things I've done: Reformatted and disabled fast user switching as someone once suggested to me. I tried about 3 other video cards because I initially thought it was my ATI Radeon video card since the BSODs were always mentioning atikmdag.sys. I tried another ATI card and it also gave me BSODs. I borrowed an NVIDIA card but wasn't able to test it for long, only about a day and nothing happened so I switched to NVIDIA. I've since had much less BSODs than I did with ATI but they still occur occasionally. I also started getting TDR errors sometimes during gameplay and sometimes randomly. It always mentions the kernel mode driver. I updated all my drivers, uninstalled them, reinstalled them, and tried older ones and nothing helped. Enabled driver verifier and that blamed a USB driver or something but I don't have anything connected to USB other than my mouse, keyboard and printer. I ran memtest and got no errors. Prime95 didn't have errors. Nothing happened with Furmark. When I tried the OCCT GPU test, I got a TDR error as soon as the test started. I also tried running Video memory stress test and it gave a bunch of errors. I'm not overclocking so everything in the BIOS is left as it is. I tried changing the memory timings and voltages but that didn't help either. Here are the pictures from CPU-Z. I changed the memory voltage to 1.6 in the BIOS though so I don't know if what's in the picture is accurate. I've checked out other articles and posts and really have no idea what else it could be. Any help is greatly appreciated. Thanks in advance.