Hi Guy, Today i've order this pc HP Pavilion 550-119nb, the PC has a normal SATA HDD, i've bought a SSD disk to build in. right now when i boot with USB Windows 7 the keyboard does not respond, i've tried several Keyboards, usb 2/usb3 nothing works. the keyboard works fine when i access the bios but while its does boot into windows won't respond on the click next to install windows. i've tried Windows 10 USB and everything works. NOTE the boot is Legacy and not UEFI, can someone please advises why ?