I have a curious problem with my Medion computer, Intel P4, etc.

The screen itself is stable but panels within the screen are not. e.g. in IE explorer the screen image is stable but the panel within the frame will jump erratically and spontaneously, even when the machine is 'hands off' The same problem occurs in OUtlook, Excel, Word etc. In MS Word I would be working say on page 3 of a multipage document when the image when the screen will jump spontaneously to other pages in the document.

I have returned the machine to the shop from which I bought it on 5 occassions - it is there again now for the 5th time.

Any ideas as to what could be causing this odd fault? Is it hardware or software? I run the same software set on my laptop without any problem.

Regards