Windows 7 Desktop Refreshing

I've never had this issue up until today. I manually shutdown my laptop at the log-in screen and from there all my issues began. When I started up my system the "Windows Reboot Manager" popped up which had never popped up before so I just chose Windows 7 and it began up just fine. Well once I got to the log-in page I typed in my password. It was a no go and after using the keypad it worked just fine. Well when I opened up Microsoft Word 2007 to see what the issue was I discovered that by pressing specific number keys it would include a letter.

Anyways, after running multiple scans, updating my computer, and scanning for viruses nothing availed. So, I went into my device manager uninstalled all keyboard devices and that fixed the issues. However, a new issue has begun to occur which is that at times my desktop icons flicker continuously and when I open my Mozilla Firefox the pages constantly refresh. In addition, when I go into other programs like Word it opens a dialog box so I can't type, in Powerpoint in causes whatever I'm working on to begin the slideshow, and even refreshes the entire list when I open up my add/remove program.

It's working fine now, but I know eventually it will go back to the flickering causing my computer to rendered practically useless. I've run all the tests I can think of and I've run out of ideas. I'm fairly certain it isn't a virus since my scans show nothing. Also, I'm using Microsoft Security Essentials since my McAfee expired; I already deleted every file related to McAfee.

If anyone could help me, that would be great.

Running: Windows 7 Home Premium 64-bit
HP Pavilion dv7-3186cl Entertainment Notebook

Hi CheyenneH and welcome to SF! :)
If you have another keyboard handy, replace it by yours and see if the problem persists.
If it does, download Malwarebytes, update it and run a full scan. Post its results here.

Glad to hear that you had no more issues!
Anyway, let's see if this status is maintained. I ask you keep us informed.