failure configuring windows features reverting changes do not turn off your computer 2K8 R2 Ent x64 bit

HI,

I am using lenovo blade server (compute node x240).with the operating system win 2k8 R2 Enterprise X64 bit OS.When i tried to install Hyper-v Role in that server it won't install that.

and prompted to restart after the restart its showing failure configuring windows features reverting changes. do not turn off your computer.

I tried to install to install ADDS in the same server but it's also won't install.Since i have only File server in that server but have a lot of dependency with server. i have installed backup EXEC in that server.

Can you please help me out about this issue.