ok so about for the past two years ive been trying to build my own computer but something always goes wrong so at x-mas my dad got me new parts and it finaly worked for 2 weeks then died and i finaly got the money to try to replace a part so i checked around the net asked some people and they all said it was my power supply so i bought a new one( antect truepower2 550 wats) and still no luck it doesnt turn on at all i plugged everything in and nothing happens my dad also double checked my stuff and he said it should work so now once again im broke but im going to be working all week so hopefully i get some money to try to fix it again but im woundering what is even wrong......could the it be the motherboard? could the case power cable be broken and it could be my case? so if it is my motherboad what one should i get? i want to keep using my cpu if that isnt dead it is a LGA 775 socket intel with 184x pin single stick so can anyone help? thank you in advance