"I THINK" u didnt instell it the right way. take it out and restart see if there problem still occure......if not then there is something wrong with hardware go change it or get a new one........if the problem is not the hardware then put in back in and restart ,then use other ppls computer to find "UP DATE" for the hard ware.....sometimes coze the BIOS is NEWer or older when instelling hard ware it will stuff up....if its older then flash ur BIOS....if its newer then u will need to find the NEW driver for it...using F8 to instell or remove the old driver. let me know if its work in the end ...hope it helps....