Problems with my PC

Tommyd said:

I have just finished building a PC, I connected the monitor and turned it on.
The monitor turns on, shows a message saying 'No Signal', then goes into sleep mode.
Everything in the tower turns on, all the fans, CPU fan and the light on the DVD drive turns on.
I thought I might need to install display drivers, but when I try to open the DVD drive, it opens either slightly, halfway or fully, then closes again straight away.
What can I do??

Is the auxiliary 4-pin power connector plugged in?

I think so, I will go and check

The only sound is from the fans.
The auxiliary 4 pin power connector is in, yes.

Tommyd said:

The only sound is from the fans.
The auxiliary 4 pin power connector is in, yes.

Unplug anything that isn't necessary... cards, drives, cd, etc. Swap an extra graphics card if you have one. You may have something DOA which is not uncommon, or else it's just something obvious you haven't though of. That happens too.

Try reseating your video and memory cards. Does your video card require a power source and if so, do you have the correct power cable(s) plugged in? Double check to be sure that your DVD drive is connected correctly. You won't get a post boot beep if you don't have a speaker in your case even if you get past boot which you aren't.

I have tried the monitor with the ports on the Motherboard for the integrated card and the dedicated card.
I will try checking the RAM again.

The RAM I have, Corsair XMS3 1333MHz, is not listed in the Motherboard compatibility list, although it runs at a frequency compatible with both processor and motherboard

" Does your video card require a power source and if so, do you have the correct power cable(s) plugged in?"

Yes it does, but if I plug the monitor into the graphics card nothing happens. I need both cables (white and blue ends) plugged into the motherboard for something to happen