@Scott, Thanks a lot, this solved the issue! (I had it in ALWIL Software)
@Tech, Sorry, I used the search function (probably my keywords were a bit off) and even skimmed the first few pages but I did not connect the boot problems title with this. Thanks!
By the way, Avast is great and is getting better and better. This is the first thing I install on everyone's computer! Keep up the good work!