dell dimension e520 power suply wiring diagrams i just installed the same power supply H305N-00 is there a diagram somewhere I can find where to make sure I have it hooked up right.. it powers up but the problem is I am getting a error there is no bootmgr I have xp on my system i try installing the window xp disc again it download files but when the window try to start up it stops and say there is a error. I recheck the setup F2 to make the booting order was correct.. just make sure the wiring is like it suppose to be. thanks for any help