^Darwish. Seems that was the problem! For some reason, when i updated flash player to latest version this option was ''checked'', causing those problems...🤔. Anyway, I can't understand why... I have downloaded the latest firefox and I have tried an older version of flash player (I am not updating flash player currently, I am scared...lol)
Thanks guys for your help!
I will test I.E. soon. *cross fingers*
If unchecking hardware acceleration fixes the problem, it usually means one of these things:
1. Your graphics card is not capable of hardware acceleration
2. Your graphics drivers are not compatible (need to be updated)
3. Your graphics card settings (via your driver's control panel) are set improperly.