help my pc keeps crashing

[cyrus]

hi guys i need help, im a newb. i went to fries to buy more ram, i replace 256 with 1gig my board can suport 2gigs after i change it when i play games it will restart or jus go back to windows, whats going on? do i need more power supply? change any setings? it jus turns off the restart or crash 2 windows even wen im jus on windows it would restart id didnt change anything but the ram stick, my prossesor is 1.66ghz is it posible i got the wron ram stick? they pick it out for me

[noby]

you need to verify what model and tyoe of ram is supported by your motherboard; you can check your manual. It can also be a bad Ram, so if you have more than i stick, try it with only one plugged in, and when it is ok, start adding the others one by one (unless you have paired ram)

noby