I recently built a new PC:
Motherboard: Gigabyte GA-946GMX-S2
Processor: Intel Pentium Core Duo @ 2.00ghz
GFX card: Sapphire ATi Radeon HD 2400XT
Now the problem is whenever i install the gfx card the computer starts up, then 3 seconds later it resets itself, but it boots up fine using the...