Laptop display digial blizzard -- help!
I have a Toshiba Satellite. It's about 3 years old and has always worked fine. It's running Windows Vista.
Starting a few weeks ago, I would be working on it. Then randomly, the display would freeze into digital blizzard -- sort of like the "snow" you see on your TV when there's no signal.
This is accompanied by a slight clicking sound at the top left of the machine. And then I have to hold down the power key to restart the machine. When it restarts, it's fine again -- for a while.
It's starting to happen with greater frequency, which worries me.
The first time it happened was when I was watching a live stream of a UFC match online.
Can anyone suggest what might be going wrong here ... and what to do about it?
I would really appreciate it.