Already tried reformatting the HDD then install new XP, tried another HDD, also tried 8.4 version but I still have that error. I have already send an e-mail to geovision's tech support and replied me with instructions on what to do but I got no luck. So, they advised me that I have to send them the card for it may be defective and they will repair it. I can't use the the card for now...