So I built a home theater PC for my brother. I tested it for a month at home and then shipped it to my brother.
When I tried to install the computer I have no video on any outputs at any time. Prior to shipping the video and audio was over hdmi. After failing to get video over hdmi, I tested DVI and VGA and I still have no video and no error beeps at all. (Yes the speaker is installed.) All of the fans start and I can hear the hard drives, but no video.
Additionally, I have to use the power supply to turn off the PC. I can hold power button down for 5 minutes and nothing happens. The reset button does not appear to do anything either.
Specs are as follows
AMD Athlon II 245 regor
2 gigabyte Corsair RAM
Thermaltake 430watt power supply
I had a 250gb WD hard drive (Windows 7 Home installed) and a 640gb WD drive in the machine, and an LG sata optical drive, but I have removed all the drives during troubleshooting, and Bios still wont post to video.
Why not just try the 500 watt power supply to see if it works then. This would be an easy fix and might possibly solve the problem. Are you sure there is not something faulty with the video card though?