I recently switched my Nvidia Geforce 8600 GTS for an Ati Radeon HD4850, and I dont know why, the pixels went strange, always flashing and particles of the place... This happened to me some games such as Just Cause 2, Doom 3 BFG and Dead Space. But Team Fortress 2 works fine...
I've formatted the disk, re-installed the Windows, installed the correct drivers, but the problem presists... What can I do?
Here's my specs:
Intel Core 2 Duo E2200 2.2Ghz
Gigabyte HD4850 512MB
DIMM 4GB RAM
I discovered that my PSU doesn't have sufficient power to the graph. I was looking for info about this, and I found that the graph needs a PSU that can give 36 amperes, and my PSU only gives 28. Could this be the real problem? The previous owner of the graph had a 550W PSU and said that before he sold me the graph she was great...
Should I give it a try and buy a new PSU? And how powerful should it be? I found one for 17€ (+-20$) with a power of 500w... It is enough?