Old hard drive went out so got a new one, everything works fine til I try to install my video card drivers, at which point the screen becomes all pixelated and off colored, as soon as you uninstall the video card driver it goes back to normal. I remember this happening a year ago when I first built this computer but I forgot how I fixed it oddly enough. I've tried every stable and beta driver listed on http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1159&pid=1745&psn=&lid=1&leg=0# no difference between them.
OS: Windows 7 Home Premium
Motherboard- GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard
CPU- AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W Quad-Core Processor HDZ965FBGMBOX
GPU- SAPPHIRE 100358OCL Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 CrossFireX Support Video Card
Memory- G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9D-8GBSR
PSU- Thermaltake - 430W TR2 ATX Power Supply
Hard drive- Western Digital Caviar Green WD20EADS 2TB 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive
Cooler- COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2 Continuous Direct Contact 120mm Sleeve CPU Cooler Compatible with latest Intel 2011/1366/1155 and AMD FM1/FM2/AM3+
Case- Antec Three Hundred Black Steel ATX Mid Tower Computer Case
OS: Windows 7 Home Premium
Motherboard- GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard
CPU- AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W Quad-Core Processor HDZ965FBGMBOX
GPU- SAPPHIRE 100358OCL Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 CrossFireX Support Video Card
Memory- G.SKILL Sniper Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL9D-8GBSR
PSU- Thermaltake - 430W TR2 ATX Power Supply
Hard drive- Western Digital Caviar Green WD20EADS 2TB 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive
Cooler- COOLER MASTER Hyper 212 EVO RR-212E-20PK-R2 Continuous Direct Contact 120mm Sleeve CPU Cooler Compatible with latest Intel 2011/1366/1155 and AMD FM1/FM2/AM3+
Case- Antec Three Hundred Black Steel ATX Mid Tower Computer Case