Tried the Windows 7 boot disk, nothing, not detecting the hard drive. Tried the Seagate firmware update, nothing, not detecting a hard drive. The computer comes on, but when it does the diagnostic, there is no hard drive recognized. Do I need a new hard drive, or could it be another problem and how do I find out? If it is a hard drive issue, how can I get my files from the old hard drive? THANKS!