I recently got a new HP Probook 6550b laptop for work. However, very often, when left alone (not put to sleep), the built in display will go dark. Not only that, but whenever I plug in an external monitor, the display will blank out as well.

Sometimes after this happens, putting the laptop to sleep and then waking it up solves the problem. But only sometimes and only for a short time. The next time I plug in my monitor, it happens again.

I know this isn't only my problem - 6 other people got the same laptop as I have at the same time, and we're all having such issues.

Any suggestions as to the root of this problem and a way to fix it? It's driving me crazy!