Hi, my mates got a laptop which has been acting very strange ever since he uninstalled Nortan Anti-Virus which we all know is bollacks **** and a number of other things. Anyway he'll turn the laptop on and it will take about an hour to boot and then will switch onto a blue screen after about 10-15mins could this be a virus. He wants me to look into because it will cost him £140 on RMA. Thanks