Question : windows xp service pack 3

almost everything i do i get a pop up that windows needs to know how to open this program, cmd msconfig and any application i try to open it pops up

Answer : windows xp service pack 3

From http://h18004.www1.hp.com/products/quickspecs/13249_na/13249_na.html

Quad-Core Intel® Xeon® E5500 processor series, up to 2.53GHz
Dual-Core Intel® Xeon® E5500 processor series, up to 1.86 GHz