What's wrong with my P.C.?

I just purchased a Compaq EVO D500 1.6 GHZ Desktop P.C. on eBay, and I can't get any video output. The seller told me to send the computer back, and if it was defective, that he would refund my money. It didn't come with a hard drive, so I used one of my own. I'm guessing that it has a bad video card, because the BIOS gave me one short beep, then two long beeps, and I didn't see any video. It has a PCI express video card, which I could replace, but I don't know how. I've never installed a PCI express card. Could there even be something worse wrong with my P.C.? Should I risk sending it back?

What's wrong with my P.C.?
Buying on eBay for these weighing 3 kg thing is very risky, but my entire computer save the case and PSU is indeed assembled from various eBay sellers. Computers do not need hard drives to even running normally as a Home Theatre PC. Sending back costs fierce but might be good idea for you don't even know how to put in a card.
Reply:send it back for refund, could be mobo, graphic card or cpu.
Reply:1) I'd never buy anything from Compaq.





2) It could be a bad motherboard or a bad video card.





I'd send it back, and buy something locally. Sometimes the item with the lower price costs more.
Reply:"1 long, 2 short Indicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information"

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