I have replaced the PSU making sure I am very careful to make sure I replace all the plugs carefully. Now it will turn on BUT I get no signal out. The only conection I'm not sure about is one from one of my hard drives which I have reconnected to the mother board (not sure if correctly). Any help or suggestions would be much appreciated. PSU Corsair 450w exact match for power.

Alex, December 2007

I had the exact same problem.Mine turned out to be the processor.someone installed a larger heatsink on it and the chip couldnt be properly seated in the socket.I changed the heatsink and it works great!

chris, January 2008

Disconnect everything except the monitor, keyboard, mouse and PSU. Then try again.
If you still get nothing then the problem is either memory, processor or motherboard.
You could also try resetting the BIOS chip.

Colin, December 2007