Yesterday I received my new gpu, a Gigabyte 280x Rev. 1 that I bought used to replace my sapphire 7850. Upon putting the card in my system, the pc wont go past the starting windows screen. It just goes black and restarts after a bit. I can get into the bios and it will run stable until I try to boot. It does the exact same thing if I try to boot from a windows setup disk or if I try to boot ubuntu. The same thing always happens. The problem continues even when I revert back to my old card. These are the things i've tried without having any success:
*Updating and re-flashing the Bios
*Reseting the CMOS
*changing PCI-e slots
*taking the MB out of the chassis and trying to boot
*Changing RAM slots
*booting from usb, hard drive, and optical drive
Build: Asus m5a97 LE 2.0 MB
4gb crucial ballistix memory
amd 6300 cpu
WD 1tb blue hard drive
Gigabyte 280x r1/ sapphire 7850 1gb
Any help is much appreciated and thanks in advance
*Updating and re-flashing the Bios
*Reseting the CMOS
*changing PCI-e slots
*taking the MB out of the chassis and trying to boot
*Changing RAM slots
*booting from usb, hard drive, and optical drive
Build: Asus m5a97 LE 2.0 MB
4gb crucial ballistix memory
amd 6300 cpu
WD 1tb blue hard drive
Gigabyte 280x r1/ sapphire 7850 1gb
Any help is much appreciated and thanks in advance