hello ,some days ago i had a screen virus that block pc asking money as bribe for unlock it,it isnt detected from avast so i fixed it manually blocking it in msconfig boot,problem is from some days days randomly 1-2 times per hour come up a screen with lines coloured that last less than 1 second i was thinking it could be Ram issue and used memtest86(no error found),also i tested my grafic card temperature and all and no issue its all perfect so i think its still a issue of this virus.
I done a fasts search for virus with avast and found 2 infect files but in log there are not quarantine files and it say no virus found…but still 2 file infect ,doing more search its same i got 2 infect files but cant remove them or find our folder …
anyone could help me?sorry for bad english