Ok, going through the post-sfc logs, I can tell that sfc is not functioning as designed on your system. Looks like this is caused by nlite:
http://www.msfn.org/board/topic/9830...om-monitoring/
That's a shame because without sfc, we effectively can not evaluate or repair system files corruption.
I can think of 3 more things we can try prior to the "reinstall" verdict:
- anti-malware treatment. We are already there.
- Drivers treatment
- Complete wipe and reinstallation of Chrome (I know that you have already attempted to reinstall it, but here is more than that)
Edit: we can also look into recent Windows Updates and attempt to find an update that possibly caused the situation