I recently purchased the intel pentium d 945 off kijiji, i also bought the m41m4-f mobo by msi. Did i screw up? I got my psu all hooked up but it wont power on. Are the cipsets not compatible with each-other?
Yep. You screwed up. I believe your board is for a dell system; they aren't designed for upgrading, as the bios settings are limited. I would reinstall your old cpu, and sell off the board/cpu as a combo. You need to upgrade the cpu/ram/motherboard at the same time for a real upgrade. Dell systems have a proprietary copy of windows tied to the motherboard, so be prepared to change to a new windows coa.