kaluman

Please help me, I bought second hand graphic card, (nvidia geforce XFX 210) installed it, and after I turned on my pc, bios showed somethind (like-commas-triangles) all ower the screen. Then windows came up, all over the screen (desktop) were some yellow lines in symetric-squares. I tried to uninstall old drivers (nvidia geforce 7300gt), and install new ones (for 210). Thing went even worse, everything bugged. (In one moment I noticed my fan (cooler) from my power supply is going slow (rotating very slowly), I turned of my computer, putted back my old graphic card and reroled my drivers, everything was like it was before, good. But, I still want that 210 to use, so I am asking for your professional help. Thank you.