Keyboard keeps opening the calculator

[korrup7ed]

I can't type without the calculator opening randomly every few keys I press...
I have no malware or viruses, already did several scans.
I read up on other forums about this, none of them were similar.
It seems to happen whenever I press 3-4 keys in quick succession
Does anyone have a solution to this?

 

[Colif]

See if resetting the keyboard settings helps - http://www.thewindowsclub.com/reset-keyboard-settings-default-windows

is it a PC or laptop? Is keyboard generic or does it have its onw software?