the BIOS should beep once to say "everything is okay"
if the system does beep once, the video card is fine. try a different monitor cable, and if it works, you know what the problem was
if it beeps more than once, or not at all, something is wrong with the PC, and it may not be the video card
listen to the beeps (if there are any) and write it down somewhere - it might be long, short, short, long or something different.
then try and find the error code in your motherboard manual and see what it means
if it doesn't beep, usually something is not put in properly, or the BIOs may be faulty