Doesn't sound like a GP issue but I could be wrong. It sounds more like a c:\Boot.ini or Boot Manager issue. If you open c:\boot.ini with a text editor (such as notepad) is everything showing to boot off "multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional"" ? Do you see any Boot.ini file on your USB key? What is your C:\Boot.ini showing? If all else fails: (be sure your data is backed up to a separate system or external HD before you do any of this...) 1. If you have a floppy drive, create a floppy boot disk, tell your pc to boot off the floppy and set your boot.ini file to boot off the c:\ drive. If it works put this boot.ini on the C:\ and tell your pc to boot off the C:\ now. 2. And\Or Enter the recovery console (add it to the boot option by going to Start > Run > typing "CDdriveLetter:\i386\winnt32 /cmdcons" ). Once installed boot into recovery console and perform fixboot and\or a fixmbr command. Mark Mills, Sr. Network Engineer Desktop Assistance, LP 14405 Walters Road, Suite 650 Houston, Texas 77014 Office Phone: 281-444-2300 x113 Email: mark.mills@xxxxxxxxxxxxxxxxxxxxxx ________________________________ From: gptalk-bounce@xxxxxxxxxxxxx [mailto:gptalk-bounce@xxxxxxxxxxxxx] On Behalf Of Piet Slaghekke Sent: June 03, 2007 10:12 AM To: gptalk@xxxxxxxxxxxxx Subject: USB DRIVE Problems winxp boot-->GPO settings? The strangest thing is happening: My windows machine will only boot with a USB drive in the USB port. It will boot in safe mode with or without the USB drive. checked bios settings, set to boot only to the SATA HD and shut off booting from USB. This is what happens if I boot without USB drive: first the windows xp screen comes up, then after a few seconds it will go to a black screen and do nothing. Put the USB drive in reboot and it boots with no problems. The only changes I have made are to the GPO settings. could something in the GPO settings be causing this? Thanks!