cut and paste stopped working

I think I've done all the attached logs correctly, fingers crossed - my cut and paste is working fine in wordpad, word, publisher, but not in browsers.... I use firefox for work and the paste function suddenly stopped. I have uninstalled firefox and reinstalled old versions, I have done spyware scans, I have uninstalled recent windows updates that were around the same time, all to no avail... I even did a system restore to a couple of days prior, no luck.... When I start the browser up, it will usually let me cut and paste once, then the function stops working, I can cut but not paste.... If I try doing it in internet explorer it works fine, but IE is no good for my work and I do lots of work in html editors on the net on websites and I can no longer do my job.

I work from home and rely on this for employment. Chrome and Iron don't render correctly on the webpages I work on which are icontact and autoresponse plus ... so using another browser is not an option.

If anyone can help I'd be grateful...

 

Thanks for helping me. there is no AV on as I uninstalled it to do all the scans, I usually run kaspersky and was running comodo at the time, as kaspersky seemed to be constantly churning on my machine like it was scanning. I know all the files you list, the ones in the my documents folder were ones I just downloaded temporarily - they were a few updated drivers, as updating drivers was one of the steps I tried trying to fix the cut and paste.

I'll put combo fix on the desktop and run it again. Thanks for the help, the problem still exists, I guess I'll end up doing a nuke and pave in the end. I was trying to avoid it but I thank you for your help anyway