No video output on brand new machine

[t1z]

I just purchased a brand new bare bones machine. The machine came with the motherboard, processor, and power supply with no OS installed. I installed windows XP and all of the updates. After installing the OS I proceeded to change out the power supply from a 350watt(which came with the machine), to a 750watt which I bought separately. After installing the new power supply I no longer get any video output whatsoever. I was wondering if this would be a problem with the power supply that I installed or possibly something else. Any help would be greatly appreciated.

 

[Rik]

Double check to see if you have missed out any connections.

 

[t1z]

I have done that a couple of times so I know that that isn't the problem. I am going to put a different power supply in and see if that makes a difference and then I will get back.

 

[Sorrow]

Onboard video on that motherboard?

 

[t1z]

Yes it does have on-board video. So I put the original power supply back in the the machine and it worked just fine. Is the 750watt PSU messed up or something else?

 

[Rik]

Short the green wire to any black wire and the psu should start up, if it doesn't, then its dead.

 

[t1z]

The computer starts up just fine, it even posts properly. There just isn't any video output when I use that 750watt PSU.

 

[Rik]

Get the 750 replaced is your best option.

 

[t1z]

Ok, thanks for all your help guys I appreciate it.