This is very weird... the bluetooth device on my laptop just disappeared. It worked fine this morning, but when I got home I couldn't connect to anything anymore. The bluetooth application said there was no bluetooth device. I tried reinstalling drivers, but it's a no-go.

Any ideas on how to try and fix this?

If you need to know, my laptop is an Acer Aspire 9420. Perhaps it's a common problem, but I couldn't find anything on Google.