The power being cut off like that may have corrupted some files.
You could try: Run sfc /scannow (yes there should be a space after c and before /) This will run System File Checker and scan your system for corrupted Windows Files
Run it several times and reboot. You have to run it more than once as some files can't be replaced with good ones from within Windows protected files until others have been put to rights.
So, click on the globe, type Run, click on Run to open the window and type sfc /scannow in the box and click on OK to start the process.