I've just built my first system, and it works fine... until you plug in a graphics card (I can boot into Windows 7 easily using the onboard graphics).
I've tested it with two separate cards now, and I still haven't had any luck. With a graphics card installed, I briefly see the POST screen, then one of three things happens: Either the screen goes completely black and the computer idles, I get a cursor in the top left corner that does nothing, or a vertical line of capital "D"s is printed down the left side of the screen. I can access the BIOS before this, but if I try to go into any of the menus it freezes and I have to hold down the power button to restart.
It only beeps once when I turn it on, which apparently means everything is fine.
I disabled the onboard graphics before installing the card, but still had no luck.
The motherboard is used (it's a hand me down from my brother), but I know it works fine since I can boot into windows using the onboard graphics, and he was using it with a graphics card as recently as a week ago (he's out of the country, so asking him if he ever had problems isn't an option).
- Gigabyte GA-MA790GP-UD4H motherboard
- Sapphire Radeon 5670 512MB GDDR5
- 2Gigs DDR2 ram Athlon II x2 3.0GHz
- 430-Watt Antec Basiq power supply (meets the graphics card requirements)
- Windows 7 Home
I really hope someone can help.