A second monitor is one of the most potent productivity boosters for Windows users, but sometimes your computer fails to see the extra display. This is a common issue most people will run into ...

Microsoft has known about this problem for over a decade ...

Your computer monitor briefly goes black for a second and then returns to normal. The power LED stays on. Everything seems fine — until it happens again 10 minutes later. Or 2 minutes. Or every 30 ...