HELP - random green/white moving pixels screen

Hi guys,

new here and thought there's no better way to start than to challenge you all with the problem below....

My laptop is displaying green pixels on black backgrounds and white looking ones on other colours, I really am not sure where to go with it. the following are the laptop details and what i've established so far:

- Laptop Model: HP probook 6550b
- Laptop GPU: Radeon HD 540v

- Issue is apparent on external display also
- have upgraded to latest GPU drivers from HP (dated 2010) to no affect
- have tried latest GPU drivers from AMD (ATI) to no affect
- issue only seems to occur on AC power
- issue does not occur in safe mode
- Checked the internet and it seems no one else (on the internet) has this particular problem on this laptop.

Updated points (i.e. things i'ev tried after my initial post):
- Issue doesn't occur in safe mode
- Issue doesn't occur when graphics drivers have been removed
- seems to get worse with increased work load (for the most part)


heres a screen shot: ImageShack® - Online Photo and Video Hosting

you have view the fullsize image and look carefully to see the dots....it gets worse than that too!

Would be very grateful for any suggestions/troubleshooting steps.

Thanks in advance!

 

so i ran it without the drivers installed and those pesky dots didnt occur. Put them back on they were right back there again.

it seems to get worse with the more applications i run, or the more work load i put on the laptop.

p.s. really would appreciate some input here