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W7 desktop issue

I have a HP 6545b laptop running W7 Pro 64bit. I've recently rebuilt the machine and it's running the latest HP drivers for all hardware.

When the computer is locked, whether by my screensaver or by me, and then unlocked, a blank white rectangle appears in the top left corner of my desktop.

This white rectangle does absolutley nothing. If I try clicking in the rectangle nothing happens, either left or right click, and the only way I can find of getting rid of this rectangle is by restarting the laptop.

I have already run both VIPRE and Malwarebytes and the computer came up clean of infection. I'm also running Avast anti virus and the computer sits behind a company or home firewall.

Does anyoine have any suggestions on how I can find out what's causing this rectangle and how to stop it appearing.

Thanks in advance

Phil - GMSchool
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scifo_dk
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scifo_dk:
1 - Yes, I've attached a file User generated image2 - Over
3 - Over
4 - No
5 - Yes, but only because it's underneath.

Ahmed786:
I thought it woudl be CCC as well, as when I shut the laptop down, this rectangle disappears almost immediately.

I've tried your suggestion - I've used the CCC and can't see anythying obvious about the system tray icon. I've gone in to system tray and customised it to hide icon. That didn't work.

I've now completely unistnalled the driver, CCC etc., restarted the machine, cleaned the registry using cCleaner, then searched the registry and taken out any keys relating to ATI Catalyst, restarted the machine, then installed the driver only and I still have the problem.

Phil - GMSchool
Regarding nr. 5 - I ment to say, if you movie a window over it (and away again) does it then dissapear?
Thanks scifo - the answer to 5 is No, it's still there.
Update:

When the computer is locked the rectangle disappears, when the screen saver kicks in the rectangle still can't be seen, it's only when the computer's unlocked the rectangle can be seen.

Hope this helps.

Phil - GMSchool
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When the machine had booted, before doing anything else I locked the computer, unlocked it so I got the white rectangle, then went in to Task Manager and closed any process that might have been the cuplrit, but couldn't find a process that cleared the rectangle.

Can you suggest a way I can find which process needs to be stopped - I can't think of one.

Thanks

Phil - GMSchool
Try either of below options

1> change to additional desktop effects


or

2> R-click an empty area of your desktop and select Properties, Desktop Tab, Customize Desktop, Web Tab. Select from the list and delete.
OK - I've found the answer.

I have Soluto software installed so I can tune the boot up of the laptop, and when I stop the Soluto process the white rectangle disappears.

I'm not getting in touch with the Soluto developers to find out what the problem is.

Thanks for your help

Phil- GMSchool.
I'm only selecting Grade B as scifo_dk gave an answer that piointed me in the right direction, rather than the actual answer itself.
Fair enough :) your welcome.