Hello everyone, Yesterday, I fired up windows update as usual, and it came up with the updates to install for Sept 2013 ( I have selected to manually install updates). Naturally, I let that process go along, but when installing the updates, the system suddenly became non-responsive (I was a bit worried, but decided to proceed) After a while of non-responsiveness, I had to manually reset the system power in order to find out the issue. After I logged into windows, There were a variety of system changes which got me worried. Most of the Executables in System32 folder like On-Screen Keyboard, Add Windows Features and Command Prompt have lost their Microsoft Authentication Signatures (It says Unknown Publisher when UAC activates). Onscreen Keyboard, which i used a lot is nonfunctional ( ) To resolve this issue, I checked System Restore, It had no restore points previous to that day (I had set a minimum of 1% space for restore points ), So, next I tried sfc /scannow...It ran and came up with integrity violations but unable to correct them, Next, I tried rebuilding the system image through DISM by Dism /Online /Cleanup-Image /RestoreHealth, since i suspected a component store corruption for the inability of correction. However, it also returned with the error 3017. I have exhausted out of all my options, my only choice left (reluctantly) is that of a reinstall, or to preserve my data by performing a Windows Upgrade. Is there any other way to save my installation or that the Windows Reinstall/Repair is inevitable ??