Bottom right corner of screen is blank

Frequently, shortly after starting a windows vista session the bottom right
corner of the screen above the start bar shows an area about 5 centimetes
square which is all white. This stays for several minutes and then
disappears. I can select the top left corner of the area and drag it to make
the area smaller, but it is always on top.

Does anyone have any idea how I can identify what is running to produce this
effect.

I am concerned that this may grow to cover the whole of the screen.

I am running Windows Vista home premium on a Toshiba laptop.

There many apps that use a 'Notification balloon" for things like email,
connection status, device status, and so on. It's a good bet one of those
type apps you have running from startup is not working well.
Windows Defender/tools menu/"System Explorer" might help you isolate it.
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Mark L. Ferguson
..

"wjwestcott" <> wrote in message
news:46A9751C-6822-4777-9E26-...
> Frequently, shortly after starting a windows vista session the bottom
> right
> corner of the screen above the start bar shows an area about 5 centimetes
> square which is all white. This stays for several minutes and then
> disappears. I can select the top left corner of the area and drag it to
> make
> the area smaller, but it is always on top.
>
> Does anyone have any idea how I can identify what is running to produce
> this
> effect.
>
> I am concerned that this may grow to cover the whole of the screen.
>
> I am running Windows Vista home premium on a Toshiba laptop.