Given a laptop by a teacher complaining she could not print etc, on looking at it, its very slow to browse the network or itself i.e. Open up my computer and it takes a while to show all the drives etc. WIFI is connected but cant browse the internet. Run CCleaner and cleared temp files etc also run Malwarebytes and nothing detected. Teacher blames new install of office 2010 but cant be true as she managed to register it. Any ideas where to go next?