I'm trying to install Windows 7 SP1 x64 from USB. Windows boots from my USB stick. I select a language for the UI. Click on install. I select the unallocated space on the targer hard drive and setup fails Setup is unable to create a system partions.... Heres the stange thing. When I try to install the image from DVD everything works like charm. The partions is created and windows installs 100%. Any insight would be much appreciated. It doesnt matter if the drive is unallocated, formated, or marked active. I've tried every which way under the sun. I've tried changing the order of boot devices, still no change. I've changed the drive mode in the BIOS from ACHI to IDE, still no change. I dont think windows 7 requires any boot critical drivers because setup sees and offers the drive as a prospect for installation, it just wont create the partition when I try to install from USB. Heres the stange thing. When I try to install the image from DVD everything works like charm. The partions is created and windows installs 100%. Any insight would be much appreciated.