Blue screen crash.

I got a new pc 3 day ago with window 7 home premium 64bit. Its had a blue screen crash already. I havent connected to the net yet. Ive only installed 2 games and nothing else. 1 game has had a catastrophic failer and wont uninstall. Ive tried to delete the game but nothing will get it off the pc. It wont let me do anything with the game. Im in the process of restoring factory settings to see if that helps. Ive used every windows os since 3.1 except vista. 7 is the slowest and hardest os ive used. Even my old spectrum zx was better and faster. My pc is an acer aspire ax1301 AMD athlon 2 x4 620 quad core 4gb ddr2 ram 1tb hard drive nvidia geforce 9200 intergrated gpu. Not sure what the other specs r.