[Q] lockscreen and system UI issue topic

So i've been using teamcanjica's CM11 for a few months ... And lately i had a problem that sometimes when i press the power button to unlock the screen ,the scren never turns on .. Only the backlights (if i managed to unlock the screen it shows a "lockscreen has stopped working" or sth) ..however today i removed my pattern security and set the slider .. And now even when i turn on the phone the lockscreen freezes and i get to my homescreem but without a notification bar and nothing responds ! Now i can't use my phone ... Is there a way to fix this without having to do a factory reset ?
Should flashing cm10 do the trick ?
Thnx for your time