More computer problems

Just yesterday, for two hours straight (11pm- 1am Philippine time), I had this problem which made it very difficult for me to draw. The 'streaks' would appear and this is what they look like (They start from where I am drawing but they go to the opposite end even way beyond where my hand is); 

What is more difficult is that the pen becomes unresponsive- it will be perfectly fine then all of a sudden exhibit these problems. Sometimes I will keep drawing a line which doesn't appear, sometimes it will register only part of the line or even a 'dot.' During this time, the tool I was using would suddenly switch (ex: from pen tool to move tool) even if my hand was nowhere near the tool palette.

Kind of not sure what glitch causes it to behave this way, or if it's related to CSP program or the pen itself.  All I know is that you just can't draw when it starts to act like this.

I've discussed all possibilities with a friend. It could be a virus that escaped my antivirus program's radar. The thing is that all these problems go away after a reformat- the issue is that they come back from an unknown source. And it's quite a hassle when it happens. If it is hacking (TBH, I'm not set on this idea as it's too outlandish and as far as I know, I have no enemies) I really have no idea what the motive is. I can understand curiosity and even tolerate it, but I figured that if it's to a point that the person being hacked could no longer use a computer then it's beyond what anyone can accept.

So I'm thinking that it's most likely a virus or a computer glitch...

Now about a week ago I left the laptop for a few minutes, then when I got back, I noticed a virtual DVD drive that appeared under My Computer.

The drive says zero bytes, but when I checked it it actually had all sorts of setup folders in it. When I restarted the computer, it was gone.

I don't know what kind of glitch or virus does this, but if my considering the possibility that it might* be something else is an over exaggeration (and illogical) I think I can be excused since this is all very peculiar to begin with. 

That's the recovery drive to the right- which, earlier this year was only 1/8 full. I haven't really touched or used it. It's the one that got corrupt and MS and HP support couldn't figure out how that happened.

This issue isn't a matter of life and death and clearly there are worse problems in the world but at the end of the day, we're all just people who want to use our phones and our computers normally like everyone else.