Let's deal with one thing at a time. I forgot to mention that the log you posted for DISM appears to show that it was run on X: not C:
Making certain you are on the C: drive, please do the following:
1) Click Start, and then type
cmd in the Start Search box.
2) Right-click cmd in the Programs list, and then click
Run as administrator. If you are prompted for an administrator password or confirmation, type your password or click Continue
3) Run the following: DISM.exe /Online /Cleanup-image /Restorehealth (with the spaces before the backslash)
4) Let the scan run until the end (100%). Depending on your system, it can take some time.
As to your registry, the FRST logs you posted for C: did not indicate any errors and you have not provided any examples of the type of issues you are experiencing other than your recent mention of the component store.
Regarding Avira:
Did you follow my instructions from post 9 above to allow Controlled folder access with Windows Defender when attempting to uninstall Avira?