Welcome aboard.

The following is from Troubleshooting Windows STOP Messages This is a good list of consolidated error messages. Do as it says, and go to the MSDN article for help.

0x0000007B: INACCESSIBLE_BOOT_DEVICE
(Click to consult the online MSDN article.)
Windows lost access to the system partition or boot volume during the startup process. Typical causes: Installing incorrect device drivers when installing or upgrading storage adapter hardware, or a virus.

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I'm here, you may now make your next two wishes.

Beat Me, Whip Me, Make Me Use Windows!!

Every Piece of Electronic Equipment runs on a finite amount of smoke. The systems are normally very efficient at reclaiming the smoke and recycling it, however, should you do something to let the smoke out, your system will become useless.

SAVE THE SMOKE !!

New PC :
New: Phenom 9500 Quad 2.2, 4gb ram XP Pro 64-bit (Sata 0), XP Pro 32 bit (sata 1), 40 eide HDD (music), Pioneer Blu-Ray Burner, HP Multidisk CD-RW/DVD-Rom, 2x250 Seagate HDD's, ATI Radeon 3870, Asus M3A32-MVP Deluxe WiFi-AP

Old PC:
P4 1.5GHz, 768 Ram, hda-80Gb (80Ubuntu), DVD R/RW