I have a serial ATA harddrive installed on my computer, and everytime I try and either reinstall Windows or repair Windows to the computer, it says that it can not find the harddrie. But, when I let it boot all the way up by itself, it will boot just fine off the same hard drive. But I keep getting Windows errors, and I want and need to reformat the drive and start over again. Any ideas on how I can go about this. Thanks.