We have a whole department I've called them they may reboot Windows or
perform fix, so they tell me

"Bob I" wrote:

Who maintains the machines? Have them check the proper video driver has
been installed.

Adam wrote:

Just moved desks and now when I'm gragging the scoll bar, the screen seems to
refresh as I go up or sideways rather than just smoothly sliding as it did
before!

I've got a similar computer, anyone can help? It really irritates me!

Any help would be greatly appreciated.

Thanks

Adam