Brand new inspiron 530 upgrading CRASHED

[jazboy]

So I bought a new inspiron 530 desktop that came in the mail yesterday. I decided to remove the stock psu and replace it with a corsair 650W power supply. Also, I added a radeon 4850 hd as a video card upgrade. Powered it on and everything worked!

So yesterday night I played some TF2, which ran perfectly, decided to call it a night, and turned on bit torrent for some nighttime downloading. I turned off my monitor and went to sleep.

This morning when I woke up the system sounded to be running fine. However, I turned on the monitor and there was no video signal. I was clicking the mouse and keyboard and it might have responded, I'm not sure exactly, but still no video signal.

So i manually restarted the system and when it turned on, the mouse didn't light up and there was still no picture on the monitor. I'm at a complete loss for what happened to my computer overnight, it powers up fine but literally nothing works, all the fans are running and power seems to be running to all the peripherals just fine.

What did I do to my computer? Are there any cables that might have come loose that could cause this issue?

PLEASE HELP!

 

[Shnur]

Try this:
Remove your 4850 and get the old card/integrated to connect to your screen.
Try booting.
If it fails, try also switching your PSU back (along with the card).
Try booting.
If it all fails, your mobo is gone and you can RMA your system (just don't tell them you changed something, they will never exchange it in this case).

 

[Kill@dor]

Replace all the old components and see if it boots.

If not, you might have to send it back for a new one...