Yoga 13, Windows 8.1, invisible keyboard presses

I have a very serious and strange issue with my PC that is preventing me from doing my work.
My PC is randomly closing windows all by itself. I will be doing my work and then all of a sudden, the window in which I am working in closes. Its like an invisible hand is pressing keys on my keyboard. Some other behavior could only be caused by holding a key down on the keyboard (such as the up key when it is continuously scrolling up through a menu). At some of the worst parts is that the computer to shutdown or reboot by itself. Another issue is that the trackpad will randomly stop responding. Usually I can get response back if I press the button on my laptop that toggles the enable/disable state of the trackpad. So I assume that somehow without me physically pressing this key, it is being pressed.
These issues have started happening a couple of days ago. The SSD upgrade was the last thing I did to it and that was at least 2 months ago. (see below)
I first I thought something with my RAM might be wrong. I downloaded Ultimate Boot CD, installed it onto a USB drive and ran the MemTest86+ test. No errors were detected. (I stopped it after an hour of running) (Screenshot) I also ran the Windows version of the memory test and no errors again.
I checked the Windows logs to check for anything strange. There was nothing unusual in the System logs but the Application logs has some stuff that might be of use. I'm not sure exactly what its saying but here is the logs under suspicion: public dropbox link
While writing this post my Google chrome window closed completely. Luckily I copied this post bc I knew it was going to happen. Then while making a file to save what I copied, the windows explorer window closed on me. AND THEN THIS HAPPENS: video I HAVE PROJECTS DUE AND I NEED TO USE THIS LAPTOP.
Additional information:
Lenovo Yoga 13 inch Computer
Windows 8.1
Owned laptop for 1 year and 2 months
Changes from stock:
Upgraded RAM from 4GB to 8GB
Added a second SSD
(To do these upgrades it requires you to remove the keyboard.)
Upgraded from Window 8 to Windows 8.1
Questions:
What do you guys think is wrong with my PC? Is it possessed by the devil?
What can I do to fix it? I can run any other tests available on the UBCD easily.
Is there a way to monitor what keys are currently being pressed (as an overlay of my other windows)?
Is this an issue with the physical keyboard? (visually I cannot notice anything wrong)

My problem was fixed by disabling the RunSwUSB service.
The jerkyness seems to be a by-product of another problem, the flickering of the mouse cursor every 2 seconds, which it was suggested was introduced by the Realtek Wireless LAN & Bluetooth Driver version 1.04.0213 dated Jun 6, 2013. This update included a logging utility that runs every 2 seconds, recording data to C:\Windows\runSW.log (the file on my PC was 117MB!!! so I recommend deleting the file). lmader started a post I have been compiling a list of fixes for the Yoga 13 here... with a link to instructions to fix a number of problems, #2 is a fix to Mouse cursor flickers after latest network driver update, that details how to disable RunSWUSB service.
Kudos to Imader!
Cheers

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