Look up the beep codes for your particular machine..
My first guess is that you dont have a video card problem. One long beep sounds like a RAM problem. Try and reseat it. A word of caution, if your system is dirty, get a can of air and blow off the crusties BEFORE pulling the ram out so it does not fall into the slot as you pull the chip out. Since the beep is on powerup I assume you dont have an overheating problem unless the beep is ONLY after the PC is rebooted and been on for a few minutes (Check your fans while you are in there). You could also have a power supply that is marginal or failing.
Sorry about being so vague but those are the possibilities as I see them...
Thong_Ispector
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