Thanks for the quick respond, Yes, before this I updated my BIOS from hp website... the reason I update it, my internal wifi is not working(not detect in device manager). Should I restore back my BIOS? How it can be done? At first, My harddisk is ok, when i try restore using F11 fail... i try to make recovery disk, then i try boot with Recovery Disk, then error come out... I thought that the error come out coz of system file in harrdisk.... I feel everything gonna be fine, as long i got recovery Disc, I format the hardddisk for the fresh start... Now i try to recover back data in harddidsk, especially Recovery Partition. Hope it can rcover But I just wonder if somebody harrdidsk is damage, eventhough we have recover disc. Are we still need to send to hp??