SQL server 2008 R2 installation STUCK

Folks
I have install express version 2008, working. Then I did something stupid I forget what , it then failed.
I then completed successful repair but still no good. So I tried to removed all related, but cpanel still shows R2.
Then I try reinstall when I get to install new instance it says: I as admin has no access to system 32/RsFx. STUCK & SUCKS