[SOLVED] Upgraded my graphics card and now games run even worse than before! Update 27/11/10 : found a solution / fix / answer, check out the second page if you have similar problems. Hello, The only game I tried my new graphic card is StarCraft 2 but I also get weird things from Windows itself. Games: I have an old PC but that matches the minimum specs of SC2 (the only game I tested my new graphic card with yet): Pentium 4 at 3ghz, 2.5GB of ram (previously 2gb), WinXP, and previously an Nvidia 6600GT card. The game ran fine in all low settings but I had lock ups frequently and 2v2 was impossible framerate wise after mid game. I changed the graphics card to get some more juice, I took out my 6600GT from Nvidia and got a ATI Radeon HD4670 from Asus. The card is installed, I even added 512 mb of ram in the process and the new graphic card has 1gb of DDR3 ram, so it looks quite nice compared to the old one. Now my problem is that the SC2 menus have horrible framerates (worst that before with the 6600GT), the mouse cursors is laggy as well, like if the PC could barely handle everything. When I still had the 6600GT I didn't have any problems with the menus. I launched a skirmish game just to see and the game lags as hell in all low (previously it worked correctly in all low) and lets not talk about medium settings cause i'm gonna cry. I don't get it ! How can upgrading my graphic card make things worse ! When I got the new card I uninstalled the old Nvidia Drivers, installed the ATI Catalyst Drivers (the latest 10.9). Windows runs fine. What should I do? The card is directX 10 capable, but I heard that on XP you can only get direct X 9.0c. Windows itself When I got my new card I installed the ATI drivers from the CD I got with it, then I wanted to get the new ones the most recents. So I downloaded the new ones and uninstalled the previous. After uninstall, I'm required to reboot I say "Yes". Then the PC takes a long time to just get out of Windows and start the reboot process. Weird. Then after loading windows XP and all, I get a black screen with only the mouse, I have to stare at it for quite a long time (I didn't have that with the 6600GT) and then the login screen appears. On a side note, during those two screens the mouse is really lagging, like if I was in a really recent game with a crap PC, but it's just windows , again weird and I didn't had that with the 6600GT. Once I get the Windows login screen, I can't click the user name to enter the password because it lags too much. I even click, it lagged, then went to bed letting it like that and when I woke up it hadn't changed a bit : So each time I have to force reboot which is never a good thing. When changed graphics cards do I need to uninstall Windows to get a fresh start ? Also each time I boot up I get a windows bubble saying a new HD audio PCI stuff, I heard it's the HDMI audio of the graphics card, could this cause the lag ? I downloaded the latester driver for that ("ATI HMDI Audio Driver) from the Realtek website and it doesn't work. I'll try with the CD I got from the card. I'm really lost here guys. I upgraded the graphics card, I even added 512mb of ram (not much but I had one 512 ram that fried to instead of Getting 1x512 again I got 1gb making it : 2gb (1gb+2x512mb) => 1gb+1gb+512mb of ram. And in the end I'm stuck with a computer that runs worst than before all this, and of course along the way I spent like 75 euros for the card, and 40 for the ram, great, pay do worsen things. Also I always had Nvidia cards, this is the first ATI card I bought and already I'm getting the fear that all the people saying ATI sucks where right. If anyone can help that would be greatly appreciated ! Sorry for the wall of text.