All of a sudden my PC has become very, very slow. Sometimes it just won't do anything. I get the "Programme is not responding" I did a virus check last night with my AVG and it said no viruses detected. I did another one this morning and they normally take about 40mins but this one had taken nearly 2hrs, and not finished before the PC totally crashed. When I switched it back on the blue start up screen came on and it first said:
Checking file system C:
The type of the file system is NTFS
The volume is dirty
Then something about recovering lost files and orphaned files. I know a bit about computers but I'm totally lost on this one! Should I get another anti virus and check it with that one. AVG is the only one I use. I know I should probably have a couple going. But dont know which to use.
HELP!!! 