Hello all. I am trying to install win7 x64 on asus k55a. So far I changed 3 2.0 usb drives, tried on all usb ports. Tried mbr/gpt, different windows iso, no luck. Tried two irst drivers they are found with the installation but when I try to install I got error "contact your vendor for an updated driver.". Also tried to do "clean" on disk using cmd. Hdd and ssd are detected in bio,s also there is a running win 10 on hdd and it works well. Any suggestions will be appreciated.