New build...basically

[DarkNovember]

Hey all. So, here's the scoop. My brothers computer died on him one night. Everything would power on, but the power light wasn't on and I wasn't getting anything on the monitor. So, I stripped it down to mobo and CPU and still got nothing. He bought a new mobo and CPU combo off on Newegg, a Foxconn mobo with a AMD Athlon 64 4000+. Also had to put my old Rosewill 450w powersupply in it. Put it all together and it's still doing the same thing. So I stripped it down to bare bones and still, gets power, but nothing comes up on monitor, not even bios. Did we get a bad mobo??? Is the Rosewill not good enough? Any help would be appreciated.

[Freakitchen]

I'd suggest building the system with its bare bones out of the case, as in this thread

http://forum.pcmech.com/showthread.php?t=132409

Is the Rosewill PSU you're using different to the one that was in the original system that failed to boot?

[DarkNovember]

The PSU is different from the original one when it crashed. I'll try redoing everything tomorrow. I'll be back if it doesn't work, so don't forget about me.