I get this error with a blue screen
"*** STOP: 0x0000007B (0x818B51B0, 0xC00000010, 0x00000000,0x00000000)
INACCESSIBLE_BOOT_DEVICE

If this is the first time you've seen this Stop error screen,
restart your computer. If this screen appears again, follow
these steps:

Check for viruses on your computer. remove any newly installed
hardware or hard drive controllers. Check your hard drive
to make sure it is properly configured and terminated.
Run CHKDSK /F to check for hard drive curruption and then
restart your computer,

Refer to your Getting Started manual for more information on
troubleshootingStop errors"
I can't do ths suggestions the error prompt tells me because the comp won't load that far. Is the hard drive dead?

A quick google search of the hex address (0x0000007B) yielded the following link on microsoft's knowledge base. Go read the article and see if it provides any help.