I recently got broadband and started downloading a lot of stuff and have subsequently developed some problems with starting up. firstly when i turn the computer on it takes about 3 to 4+ hours to load. then it might automatically restart by itself during a session. there doesn't seem to be any viruses so i went to a computer shop and was told i either don't have enough memory or my root directory is full. is there anyway to fix this without bothering to take it in to be looked at.