On many occasions my PC has encountered a problem I could not fix myself OR the PC of a friend encountered that same problem and he needed my assistance.
In both of those cases, outside help was required. Windows happens to have a REMOTE ASSISTANCE option but it happens to be quite complicated and clunky at best. So, we used Team Viewer.
Team Viewer is a program that allows you to take control of the PC that offers you its ID and Password.
In the BEFORE times, it would only work between 2 PCs. Times have changed, however.
Now, you can use that program even from you phone or tab. So provided you assistance is required, just log on quickly to Android Market OR their official website, get the app, and solve it.
Quick and Easy, I highly recommend this little app as it is one of the truly useful ones out there.