Scrolling with mouse causing iMac to crash?

So I'm using a 2010 iMac at work, running on 10.8.4. It has Bootcamp and CS6, and it has been crashing pretty much every day since I started using it last week.
At first I thought it was a problem with Safari, as even when no other programs were open, the Mac would lock up or outright crash, every time resulting in having to reset it regardless. The past two days, I have kept Safari closed, and while yesterday it managed to make it through the entire day, today it has already needed to be restarted once already.
I think it may have something to do with scrolling with the mouse (I use a Magic Mouse), or perhaps just the screen moving in general. Whenever it is about to crash, the screen will sometimes flicker, or only the bottom of the screen will flicker; sometimes lines appear in the middle of the screen in either case. It's only locked up once to the point where it needed restarting. Usually though it will flicker once and then go to a blank white/grey screen.
I know I could just tell my supervisor that this Mac has a problem, but I'd rather try to find a way to fix the issue beforehand, as the last time I needed something to be installed on it, I ended up having to wait three days (and I'd rather not repeat that!)

Hi there,
The flickering definitely sounds as though there could be an issue with the Graphics Card/Logicboard. I'd definitely have it looked at. Worth running Apple Hardware Test to see if that reports anything.
Good luck.
Ben

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