I got trouble with my dell studio xps 1647. The bios flash failed (freeze with white screen). I tried to use phoenix crisis recovery tool (run wincrisis in windows xp, then get 3 files: minidos, flash16 and bios.wph in the usb drive). However, I am unable to access the recovery mode (no beep or fan sound, no led of usb drive; I tried many key combination). Anyone help me please ?