4870 crashing, D601 light on

[blacktullipe]

MY PCC DOESN'T START ANY MORE, THE PROBLEM AS I HAVE SEEN TILL NOW IS MY ATI RADEON EAH 4870 512M IS CRASHING...3 LED LIGHTS ARE RED: D601,D602 AND D603 COULD YOU HELP ME PLEASE...WHAT SHOULD I DO?

 

[blacktullipe]

the sistem is restarting constanly

 

[blacktullipe]

could anyone give me a solution? i'm all alone in here? hello hello echo echo