Hey guys, I recently purchased a 480GTX (Gigabyte 480GTX Super Overclock) as an upgrade from a 280GTX (BFG 280GTX OCX) and have yet to get it stably running with my computer (fans spin at 100% with no picture).
I'll list my specs at the bottom, but the bottom line is 280GTX works fine - as soon as I switch in the 480GTX - no picture... but the computer seems to go past the BIOS and windows (Chassis fans speed down according to the BIOS & takes a while to shut down when I hit the power button aka its on the windows desktop).
After hours of checking all the connections (PCI-E 2.0 ports / PCI-E 6/8 pin connectors/DVI Cable) I took out the RAM all together and tried one stick at a time in different ports - eventually I got a picture with just one stick - Was able to play crysis 2 solidly for a few hours, and did a FurMARK benchmark.
However as soon as I restarted my computer, it went back to not showing a picture and I've yet to get it to work again with any RAM combination. I ran multiple memtests on the RAM and found no problems.
I've updated all my motherboard drivers and BIOS and have a more than capable Coolermaster 850Watt PSU. If ANYONE has any idea I'd be eternally greatful!
Coolermaster 850Watt PSU
Core 2 Quad [email protected]
Kingston HyperX DDR2@800mhz
Asus P5N-T Deluxe nForce 780i
Corsair RealSSD 64GB
Samsung 750GB HDD 32MB Buffer
280GTX -> 480GTX
I'll list my specs at the bottom, but the bottom line is 280GTX works fine - as soon as I switch in the 480GTX - no picture... but the computer seems to go past the BIOS and windows (Chassis fans speed down according to the BIOS & takes a while to shut down when I hit the power button aka its on the windows desktop).
After hours of checking all the connections (PCI-E 2.0 ports / PCI-E 6/8 pin connectors/DVI Cable) I took out the RAM all together and tried one stick at a time in different ports - eventually I got a picture with just one stick - Was able to play crysis 2 solidly for a few hours, and did a FurMARK benchmark.
However as soon as I restarted my computer, it went back to not showing a picture and I've yet to get it to work again with any RAM combination. I ran multiple memtests on the RAM and found no problems.
I've updated all my motherboard drivers and BIOS and have a more than capable Coolermaster 850Watt PSU. If ANYONE has any idea I'd be eternally greatful!
Coolermaster 850Watt PSU
Core 2 Quad [email protected]
Kingston HyperX DDR2@800mhz
Asus P5N-T Deluxe nForce 780i
Corsair RealSSD 64GB
Samsung 750GB HDD 32MB Buffer
280GTX -> 480GTX

