Virus????????????

i got this virus called deflib.dll something and my antivirus pop up always show it and then freeze!!!! i got avast 4.7 home edition and i tryed to delete it in safe mode and i did it succesfully but when i restart and in normal mode IT pops up again!!!!!!!!!! cant delete it at allllllllllll what to dooooooooooo HELP!!

Virus????????????antivirus programs

I would personally recommend AVG but that is just me...I have had no trouble with that at all!!!

Virus????????????computer protection

try runnin the antivirus in safe mode, and also, make sure it is actually freezing, some times the computer will stop, continue processing and make the illusion that it is frozen, somtimes even say "not responding" leave it a while, if not u might have to reboot so back up all ur files in safe mode and be careful nit to back up hidden files of the virus.
it has put a restore in your registry. i suggest uninstalling the avast and downloading the free ESET nod.....the best virus software available. it will take care of it
Most likely that .dll file is only 1 symptom of the malware. So you deleting the file won't do any good because the malware is still there and just respawning it on reboot.

As a security professional I absolutely never recommend the use of freeware... so perhaps that is part of your problem.