Yesterday i bought a brand new ASUS M5A78L LE motherboard to replace my old one P5NE-SLI. I have an AMD Radeon HD 5850 graphics card and it was fully functional with the P5NE-SLI, but it's not working with my new motherboard. I didn't change my PSU so it's not the problem from the PSU (850W). I've checked everything the wire connections, the RAM, the PSU, everything. When i started up the system with my new motherboard and the HD 5850 i got one long beep and three short beeps which means that there is no VGA. I had an old AMD Radeon 2000 series gfx card (i don't remember the exact model) and i put this card in. The system started up without the beeps and i had graphics, but a very bad resolution. I installed the drivers and again the resolution was bad. I've also intalled the latest BIOS version and still nothing with the HD 5850! Please help me!! I want to know how can i make the Radeon HD 5850 to work with my system!
My computer specs:
CPU: AMD FX-8120 3.1GHZ 8-CORE
PSU: 850W (i don't know the brand)
RAM: Geil 1600MHz 4GB(2x2GB)
Motherboard: ASUS M5A78L LE
GPU: AMD Radeon HD 5850 (which i want to make it to work with the system)
I've downloaded and updated the BIOS from this page http://www.asus.com/Motherboards/AMD_AM3Plus/M5A78L_LE/... and not from the memory support. What you told me before to disable the on-board graphics, i go to the advanced tab and then chipset and there says "internal graphics" and i enter. I can't find anything to disable. I don't have on-board graphics.