How many damaged files were there? just out of interest.

I exactly don't know how to read these logs but the log is a massive 9.7MB I searched for the word repair well there were way too many places where i found it so i guess many files.

Thanks for helping guyz.

The words you need to find are "cannot repair". There may be additional logs in that file so you could try deleting the log and then running sfc again. There is some way of isolating the lines with cannot repair in them which I read about somewhere I'll try to find it again.

"iassdo.dll.mui" This is the file that has gone corrupt has this anything to do with screensaver/display turn off should i replace it?

All I could find is a lot of other threads with the same file being shown as corrupt by SFC, absolutely no information on what it is. This MS guide shows how to replace the file which you should find on your OS disc.

http://support.microsoft.com/kb/929833

You can download the file from here if need be, the site is marked as trusted but I would scan it after download just to be on the safe side.

http://www.megaupload.com/?d=QQ6ITUJ0

Unable to copy file because access is denied but will this fix the screensaver problem?

Are you using an "Elevated Command Prompt" as the instructions tell you to. You do this by typing CMD into the search box, a pop up menu appears above and then you need to right click on CMD and select "Run as Administrator".

And in answer to the question, due to the lack of any information on this file the simple answer is I don't know.

This guide I found for Vista but it should apply, may be worth a read. Some of the command scripts will allow you to see what is going on. The suggestion in post 106 (below the guide) might also be of use.

http://techwhimsy.com/fixing-hibernate-problems-in-windows-vista/comment-page-3

Repaired the file also I installed win7 on another machine the screensaver/display turn off seems to work fine there probably some hardware am using or i need to do a fresh install that's the option left till then will have to remember to switch off monitor before i leave the room.

Thanks for helping me.

Your welcome.