I have a dell inspirion. With in the last 4 months I have had a problem with commercials playing through my laptop. I tried disconnecting the networking cable and that stopped them at first. However, after about the fourth time I tried this I found out that whatever was going on was not related to the networking cable. I'm not sure if it means I have a virus or if someone loaded something on the computer to cause this. Should I just take it into the shop and have someone look at it or is there a way to fix it myself?