Here is a bit of computer advice from a freaking genuis..
If you move into a modern new house from an old crappy one, and you plug your lap-top into a random available outlet, make damned sure it is not an outlet that is currently operated by:
- A dimmer switch
- A dimmer switch that is currently doing its job by dimming
That is of course, unless you WANT the power-supply on your laptop to be instantly destroyed.
Then, if you want to enter the realm of freaking genius, when trying to diagnose the problem (before you are aware of the dimmer switch) plug ANOTHER lap-top in, just to see if it will happen again. It will.