I've a problem with my vista , black screen. I dont have AHCI cd-rom, but I have the recovery disk but will I lose all my data if I use the recovery disk? The black screen reads - AMD data change update new data to nvidia boot agent 249.0542 client mac addr:00 1d 72 a9 82 fe PXE-E53 no boot file name received PXE-M0F EXITING NVIDIA bootagent boot from AHCI cd-rom disk boot failure insert system disk please help , thank you