Editing problem

Last night when I went to post to my website, I could not do anything in edit mode. The edit screen was white (also on older posts when I went to edit them) and cursor did not appear. I also could not toggle between visual and text mode.
However, on another computer, I was able to post my story and do normal functions on the site.
So is my problem a WordPress issue or my computer issue, and if so what is it? I ran malware scan and found nothing. I reloaded wordpress with no luck, also deactivated plugins, restarted computer, with no change