This is a bit of a strange question, so I will try and give as much information as I can.
Let me start by saying that the enter key on my keyboard is absolutely fine, physically. I am writing this post using the enter key (or lack there of).
However, sometimes, if I leave my computer alone for as few as 5 minutes I will come back to the enter key acting like it is constantly being pressed. Meaning if I try to type in Skype, my message would show up as hundreds of one letter messages as opposed to one paragraph of text.
One thing I have noticed though, is that most of the time I have found out this error, it is me typing a message on Skype.
Another problem I have found when using the video feature of Skype is that my mouse and keyboard both freeze simultaneously in place for 5-10 seconds, then come back and work as normal until it freezes again (this can be 5 seconds after, or 10 minutes later, it really is random).
I have got a Razer Blackwidow 2014 keyboard, and a Razer Naga Hex mouse, with the Razer Synapse 2.0 software, which is fully updated and configured correctly.
I know there is a lack of information here, but if there is anymore information I can give you I will try my best. Troubleshooting the problem has become quite a chore, as making one change (uninstalling Skype for example) may not give immediate results, and may take hours before I found out what is causing this problem.
I thank you in advance for any responses to a very annoying issue.