Cant screen dump/ Print screen!

Im using Avast Home Addition 4.7 after having some problems with a Trojan Virus and slow internet connection. Ihave also fragmented my files after the speed was affected. I can no longer [prt sc] is this due to the restrictions from avast, or am I being stupid in thinking so? I am pressing the prt sc button and then trying to paste the image into paint. There is no option to paste and ctrl+v doesn’t work either! any ideas would be greatfully received.
x >:(

No avast doesn’t restrict Print Screen or any other function for that mater, it merely scan files being opened, etc. and alerts to any infection.

I suggest a forum search for cant paste as this has been covered very recently. This is just one of them, http://forum.avast.com/index.php?topic=27373.msg223876#msg223876.

WinSnap screen capture - http://www.ntwind.com/software/winsnap.html is a free screen capture that may work in place of the print screen, but you will have to investigate the link in the forums I gave.