Hey there Windows7 Forums, Today I decided I was going to modify my computer which involved chiefly, the manipulation of .dll's in the system32 folder. The .dll's I know I manipulated were themeservice.dll , themeui.dll, and uxtheme.dll. In order to do this, I had to change ownership of the computer to my account instead of "TrustedInstaller" or something like that. (I figured this would be important though I'm not sure if I successfully did or did not. I know I messed with a lot of ownership.) Once I manipulated these I started getting some significant errors. The one I noticed most was the fact that I was missing "API-MS-WIN-CORE-Local Registry- L1- 1 - 0.dll" and that I needed to reinstall it. I've tried doing a system restore point and check the system for hardware errors but neither have worked. I think I have build 7000. Right now, I found a link to re-download the .iso image so I can reinstall. Just a thought of my own- what if someone were to send me a copy of the .dll's I manipulated (themeservice.dll , themeui.dll, and uxtheme.dll) and the one it says I'm missing (API-MS-WIN-CORE-Local Registry- L1- 1 - 0.dll) and then go through DOS to copy them over from one drive to another and replace what I need. Would that work?