Graphics glitch

[Hodsocks]

I have a problem with a compaq desktop with a Nvidia 7500LE card, it all seems to work OK most of the time but if you go to change from one page to another eg as when changing web pages, you get a quick flash of the page in negative and then it goes back to normal.
I have downloaded the latest drivers from Nvidia and ran Malwarebytes antimalware to remove 250+ items of malware, mainly variants of Websearch, neither of these have made any difference to the problem.
Anyone have any suggestions?

 

[Tmagic650]

What type and model of monitor are you running?

 

[Hodsocks]

Not sure about model but its a 17" TFT. I have checked all settings and they all appear to be fine.