Thanks for your help guys, esp Alex. I tried EVERYTHING and none of\nthem worked. Sure enough I looked for that stupid sticker and\ncouldn't find it. :/ Looks like the 450 is a no-go.\n\nDid manage to get the 2500+ heatsink off and put the 350 back in with\nit's native heatsink. Still not a bad 3rd computer. Thanks again.