Hello, after my windows 8.1 suddenly went off due to a power failure because of a blackout in the city, I turned it on to get many errors. First error is every time I want to run firefox it asks me if it should be chosen as the default browser. Second error I detected is that the view settings does not get saved for any folder I open in explorer.exe/file explorer.

I am guessing some system file or registry got corrupt due to the sudden power off.

SFC /Scannow does not fix this. This is not the first time or first PC I have encountered this issue. This seems to be an issue which is only for windows 8.1 and does not get fixed by, System repair, Sfc/ Scannow, or Dism /Online /Cleanup-Image /RestoreHealth. I have been trying various fixes on three of my PCs but each time my PC turns off due to a power outage along the city, this happens. Slowly the System will show more error and eventually it will get unusable. Now I know it gets fixed if I re-install windows 8.1, but if I have to re-install everytime there is an accident or anything and without any recovery options that seems kinda wierd doesnt it?

Also, I updated to 38.0.1 of firefox on the morning no problem. And worked on firefox for 6 hours already.

Hi,

According to your description, it seems like system got corrupt indeed after power failure. System repair can't resolve all Windows corrupt problem.

In my opinion, for this problem, if your system has been made backup, you can try to restore it to a former normal time point for test.

On the other hand, you can open system restore to check if it has saved any system restore point, if that it is, try to use the restore point to restore your system.