[SOLVED] Windows 7 Amd Ryzen

Solution
Asus has W7 drivers for their MBs and W7 works fine on 1st gen Ryzen but not with 2nd gen. Problem with installation is drivers for USB which have to be installed into ISO or USB ports, including keyboards and mice doesn't work. Could be bypassed by using PS/2 KB and mouse. Also would need drivers for M.2 SSDs if you want to install on one of those.
MSI has a BIOS for one of their MBs to install W7 directly.
Asus has W7 drivers for their MBs and W7 works fine on 1st gen Ryzen but not with 2nd gen. Problem with installation is drivers for USB which have to be installed into ISO or USB ports, including keyboards and mice doesn't work. Could be bypassed by using PS/2 KB and mouse. Also would need drivers for M.2 SSDs if you want to install on one of those.
MSI has a BIOS for one of their MBs to install W7 directly.
 
Solution