Hello All, Sometime ago my son started using my old Alienware Area-51, which consists on a solid Q9400, Asus P5N-D, 8GB RAM on a Thermaltake 775w PSU. Until some days ago we were using a Radeon 4850 & Windows 10. Rock Solid machine, but unable to run some newer DirectX games like Crysis 3. Then (I regret) we decided to take a second hand XFX R7 260x. Well, the nightmare begins: After installing the latest Catalyst, several constant: "Display Driver Stopped Working and has Recovered" notifications. I tried several steps: Uninstalling Catalyst normally and reinstalling latest beta drivers: Same problem Uninstalling Catalyst with DDU (newer name of Driver Sweeper) and installing latest driver: Same problem Uninstalling Catalyst with DDU (newer name of Driver Sweeper) and installing latest beta driver: Same problem Updating BIOS with last ASUS P5N-D version: Same problem Uninstalling Catalyst with DDU (newer name of Driver Sweeper) and installing old Catalyst (8.1 version from circa April/2014, which I suspect was the time when R7 260x was launched: DIFFERENT PROBLEM. Blue Screen of Death with 0xa000001 (or something like it) Then I got suspicious with the PSU. Took my voltmeter out of the closet and: Rock solid voltage out of PSU connectors My next two steps are: 1) Take another hard driver and perform a clean Windows 7 install to test to see if I got the same errors 2) Start a very tense discussion with the seller to tell him that there's probably a problem with the board (really didn't wanted that) Some additional thoughts: 1) As this error 0xa000001 seems to be something related to voltage on the video card. Maybe that could be related to using such a newer card on an old machine. As this card P5N-D has a lot of options to manually increase voltages. Could I try something on NB or SB? if so, someone has some suggestions? Thanks in Advance, Heitor.