i have HP envy x2 laptop windows 8 and tried to downgrade it to win7 ultimate x64 by usb uefi boot,, during installation,, the computer restarts automatically after installation but when it restarts,, it goes to the very beginning of win7 installation,,, whats wrong with it???
or does this model cant support win7?? help pls,,
or does this model cant support win7?? help pls,,

My Computer
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- custom build
- OS
- windows 7 ultimate x64