MSMIN is the run file for express and as it is part of windows you can't really remove it (even though it is listed in add/remove windows components..
Make sure you have all the available updates from windows update..if ur still having probs then try this..
In safe mode;
Click start > run and typ msconfig..click on expand file..
In the first box type msimn.exe,
In the second type, c:\windows\driver cache\i386
In the last box type c:\windows\system32
and then click expand file, click ok and then agree to restart