Display screen when changing the programs problem

I have a C670 - 17L and just recently I started having problems when switching between programs on the taskbar. Already when I used to click to change the programs screen of the selected program would open quickly. Now, it's much slower - it shows behavior similar to discoloration in transition on a Powerpoint presentation. Instead of a good quick change, it takes a few seconds.

The only changes I did install Mozilla Thunderbird and Norton Internet Security, but I don't see why that should make a difference.

Any help would be greatly appreciated - it's starting to drive me crazy!

>.. .and Norton Internet Security...
Remove Norton from the system and check if there is a difference. As far as I know that Norton is well known for slow performance s notebook due to his activity in the background.

If you want to have the right antivirus software install Avira antivir.

Tags: Toshiba

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