I recently built a new computer, I installed a sata hard drive and put windows XP on it with out problems. I have been using the computer for a few days now and I just started running into this problem. When I try to restart the computer, I get the message "Reboot and select a proper boot device or insert boot media in selected boot device and press any key". I have tried powering off the computer and one out of about five times it will boot normally. Every other time I get this error message. I have checked all the cables and everything seems to be ok. I have set the bios to default and nothing changes. Any help would be greatly appreciated. Thanks