my laptop gives me a blue screen with a frown face?

after it resetes avast pops up says i have 200 plus issues i have no problem paying but once i run avasts scan it says im fine! im a moblile dj this is a big issue as it causes me to loose settings and files. somewhere i have a issue or a virus but avast is not catching it the scan but it finds it after a crash? what do i do?

Please follow the instructions here.

https://forum.avast.com/index.php?topic=194892.0