Hello. I have question. On my main bios 1.28 I can't install W7 whatsoever, Uefi change to CSM not working. After multiple days of trying i tried flip to second bios 1.07 and change from uefi to CSM and W7 install no problem. So newer bios losing support for W7,is this some new feature or i dont understand it?

Thank you for reply, but i'm sure that this isn't it. This option should be use if you use DVD drive for install, iam using USB (i should mention that before, sorry). Even if i use this option there is no change. I set both bioses the same way. I install W7 on older bios, newer doesnt work, after install i switch to newer bios W7 boot but after that they do not recognize USB device (mouse, keaybord) so i cant use that. Switch to older bios everythink work.