RSOP access is denied, gpo not apply

Hi All.

OS: Windows 2008 r2 sp1, Hyper-v server 2008 r2 sp1, Windows 7 x64, x86 ultimate

I got 2 servers, on each server I install Windows 2008 r2 sp1 and set up roles: AD, DNS, FS, IIS and Hyper-V.

I read about best practice so I decide transform one of server to hyper-v server 2008 r2 sp1.

I transfer FSMO roles to 2^nd DC, then downgrade first server, remove from domain and reinstall. All seems work. Now I got 1 DC. Also I reset all GPO and OU and create new.

After I create new GPO I test it but on my VM it works, but at users PC it’s not working. I lunch Group policy Result Wizard and its say: Access is denied. I try another’s PC but got same error, and then I try my VM and its work fine ….. Then I realize that it works only for PC that was added in domain after I delete first DC.I look at all logs that can find on DC and users PC but don’t get any errors L RSOP works fine when I start it at local users pc, no errors …. After that I see that some PC policy don’t apply, but in local RSOP I don’t see that they even *noted* (they don’t show in apply/deny GPO)

I Google the error but find only solution for windows XP SP2

So any suggestion how I can solve that strange errors?

Thx for answers, sorry for wall of text.