Green and Purple dots appearing on TFT

[Harj]

I have just noticed that there are groups of green and purple rectangulary grouped dots thats keep apppearing on my TFT.

When I hover my mouse over them they disappear.

If I play a DVD the rate at which these boxes appear increases. They appear columns from the top of my screen to the bottom.

However if i am doing nothing demanding i.e. the PC is idle then these boxes dont appear.

Any ideas?

[Steviey]

Do the green dots appear when you boot up ?

[Harj]

no they dont after a boot everything is fine, its just when i try and play some sort of video file they slowly start to appear.

have tried a virus scan, but having no luck in finding anything

[Steviey]

May need to update to video drivers. I noticed this happended to me when I was playing video files and it got worse and worse. Had to have my tft replaced in the end. What make and model is yout tft ?

[Harj]

its a philips 150 s3