Hello everybody,
Yesterday I installed Bitdefender Antivirus Pro 2015 trial onto my Windows 7 laptop and defragmented my disk with it. Today my Windows isn't working. After logging in I can only see black screen with a cursor and bitdefender circle logo on the bottom right. I was able to close the logo and open taskmanager which looked like this:

Things I tried:
1) Restoring windows. Didn't work as it seems all the restoration points have been removed except for the one after defragmenting the disk.
2) Repairing windows. Didn't work as no problems have been detected.
3) Running windows in Safe Mode. Works, but once trying to open bitdefender it shows an error message "Bitdefender services are not responding. Please restart your computer"
4) Starting windows in the last known good configuration. Works, but the windows are super slow and Bitdefender shows the exact same error message as in the safe mode.
This is the first time I am experiencing any problems with this laptop whatsoever. Does anybody know how to fix this?