One comment I'd like to make here too, is a rule of thumb guide many of us "old guys" use. If the computer your grandson is using (it would be helpful to know the make/model) doesn't boot up in less than 5 min. it needs to be serviced. You can do a lot of this stuff yourself as mentioned by others above, however, this is tricky stuff. To be clear, from the time you turn on the power-on switch on your grandson's computer until the time Windows boots up and you can bring up a browser (IE, Chrome, Firefox, Safari, etc.) to a home page; this is bootup time, and on a PC that came with Win8.1 it should not exceed 5 min. total time. Otherwise it's a combination of Windows corruption, possible virus/malware...