Greetings! There has been a problem with my computer for some time now and I have no idea how to solve it. I cannot press Right click while having Ctrl pressed. If I have Ctrl pressed and I press right click nothing happens. Instead of the normal box that should appear in Windows, I get a weird line which does not follow the pointer (see attachment) and then I don't get the regular right click box. Also, when I try the Ctrl + Right Click combination in video games, I get a lot of frame lag for a few seconds. This also happens if I press Ctrl with the On-screen keyboard, so I assume it is a problem of Windows, not my keyboard. All the latest drivers of my keyboard are properly installed. This error just happened out of nowhere some time ago and has stayed so ever since. Could anyone please help me? It's really disturbing, especially when playing video games, since ctrl is an important key. Thank you in advance for any replies!