Deleted files from C:\Windows\Installer (derp) Problems

[FreshFabric]

I am unable to uninstall or repair Office. After the installation runs, it ends with the a message saying that it was unable to install successfully. I don't actually know for sure why this is happening, but I have a suspicion that it's because of something I did recently.
In an act of stupidity, I deleted files from the Installer folder, forgetting that it was an important directory.

Also, I am unable to install any ATI video drivers (even the one that was included with my computer's drivers disc). I don't know if this is related or not.

Is there a way to prepare windows so that I can uninstall office?

 

[Bill2]

Try running ssytem restore.

Or sfc scan.

http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

Or repair install.

http://www.sevenforums.com/tutorials/3413-repair-install.html

 

[FreshFabric]

Try running ssytem restore.

Or sfc scan.

http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

Or repair install.

http://www.sevenforums.com/tutorials/3413-repair-install.html

SFC scan did not find any integrity violations.
As far as I know, the Installer folder is dependent of applications I install after windows, which would mean repairing windows wouldn't affect it.

 

[medenko]

sorry for bumping this, i did this error too 2 yesterday, help me please.

 

[medenko]

also when i tried system restore it shows me no restore points? please help.