Ok, first of all, excuse me if for any reason there is a guide somewhere on TPU, if so please re-direct me to it and lock this thread.. I have been trying to install W7 using EFI on a Lenovo Thinkpad T420s - (4173). The laptop is equipped with an SSD disk of 160Gb, 4gigs of ram and a nice i5 cpu. Problem is, I actually googled before coming here, and tried various things "found" on the net. Doesn't work, gives me an error: File: \windows\system32\boot\winload.efi Status: 0xc000000f Info: The selectred entry could not be loaded because the application is missing or corrupt First I found that I have 3 different USB ports, one is 2.0 (black) one is yellow (??) and one is blue (3.0 I assume). Thanks if anyone can just say what wrong I'm doing. Booting from a USB stick - FAT32, used Universal USB installer.. EDIT: Nevermind, called them at Lenovo, have to update the BIOS first. Have installed Win7 x64 in the normal way instead. Thanks.