Mouse pointer freeze on options screens

[IndioBlack]

I've just reloaded FS2004 after needing a new hard drive, and whilst selecting options for joystick control and such, I kept getting the mouse pointer freezing, and then had to reboot.
Has anyone else suffered this with FS2004, or does it suggest I have some other problem with my computer?
I already re-installed LOMAC and IL-2 1946, and they worked fine with options selections and Joystick assignments.
I'm using XP, and CH range of controllers.

[Groundbound1]

Overclocked?

[IndioBlack]

No, it shouldn't be. I bought an Nvidia 8600GTS, not an overclocked version.
But just out of interest, why would overclocking cause mouse-pointer  freezes? I'm just wondering if my power supply is being stretched to the limit with all the CH controllers plugged in.

[homebrewer]

Don't know if this is the same type of problem, but my cursor disappears for multiple seconds when I go the Create a Flight screen. I flip and flop the trackball all around, but the cursor ain't there for five or six seconds, then it shows up. Any ideas?