I bought a new computer yesterday that has a Athlon 64 bit processor. I installed Windows XP home edition and everything was fine. A friend and I wanted to try Windows 64 bit edtion so we got a trial release. We made a new partition for the new operating system and installed it with no problems until we had to reboot. The error message "Cannot Read Disc - press Control + Alt + Del to restart" now appears every time I turn the computer on. Using the windows recovery console I deleted the problematic/new partition. I've tried fdisk and fixmbr but neither of them have helped. I am currently running chkdsk /r but its taking forever. I would REALLY prefer not to have to reformat the harddrive but if it comes to that I guess I have no choice. Any help would be appreciated.