System Restore Points - Manually Extract Files and Folders

It is Windows'.

Unfortunetaly, I don't.

Then I need to install a clean windows again. I hate to do it all the time.

Brink said:

If the program itself does have some sort of undo option you could use, then you could try doing a repair install.

Yes, it has. Before doing repair install, can you take a look to program itself?

Every page contains a restore button. In one spesific page (Page - Explorer(I)) I made some tries. Then I wanted to restore these changes. I clicked to restore button on that page but it changed other things too. (Like mouse pointer speed in System page) Can I undo these changes within the program? (It also undid other changes I made in this program like "Keyboard numlock state at start up". I'm okay with those but not with other ones.)

There is an options section under the about menu, but it is only for making a password to use the program.

I installed program here: Optimize, tweak, clean, speed up and repair Windows 7 - Windows 7 Manager

These programs provide absolutely no benefit for Win7 but are the source of many problems we've seen here all along. Win7 is already the leanest OS ever with virtually no overhead that can be reclaimed using tweaks or optimizations outside of normal System settings. WHile there was reason to do this in XP, there is no such reason remaining in Win7 which is always instantaneous with a perfect install on adequate, tested hardware.

Normally if you cannot restore or re-image to before such a ruinous program was used, the only real solution left is to reinstall. Following these same steps to Clean Reinstall - Factory OEM Windows 7 will assure you get and keep a perfect install based on what has worked best in tens of thousands of installs we've helped with here.

I will do repair install then. If it doesn't work, I will try clean reinstall.

Thank you for your help. I won't be able to use pc for a week. One week later, I'l be back.