is my graphic card dead

My computer suddenly does not post, monitor does not turn green. I change the graphic card to the old computer and use the old graphic card in the old computer for my new computer. The new computer post normally but the old computer does not post after a couple of beepings.

Clearly something is wrong with graphic card. Is it just dead and nothing could be done or we can have some "clear" like CMOS clear for mainboard.

thanks.