Hi all, I recently installed a new CPU cooler, and ever since my XFX ATI Radeon 5830 graphics card hasn't been working properly. At first the PC would not boot at all when the tower was upright, so I kept it flat on it's side, worked fine for a while. But whenever it was physically shifted a small bit, the screen would go fuzzy and the device drivers would stop working. A few times the screen would have vertical lines going across or go completely grey. I have had to take the graphics card out and am currently using the onboard graphics. Also it seemed to be wobbling in the slot in the motherboard, I'm not sure what the fault is with it. I don't have any other motherboards or graphics cards to try out in it. Here are my specs from Speccy Operating System MS Windows 7 Professional 64-bit SP1 CPU AMD Phenom II X6 1090T 34 °C Thuban 45nm Technology RAM 8.00 GB Dual-Channel DDR3 @ 595MHz (9-9-9-24) Motherboard ASUSTeK Computer INC. M5A78L-M/USB3 (AM3R2) 44 °C Graphics F22 (1920x1080@60Hz) ATI Radeon 3000 Graphics (ASUStek Computer Inc) Hard Drives 1863GB SAMSUNG SAMSUNG HD204UI ATA Device (SATA) 34 °C (SATA) 28 °C Optical Drives Optiarc DVD RW AD-5260S ATA Device Audio Plantronics GameCom