I had the trayapp problem for months and tried all the "solutions" I could find with no results at all. I even downloaded a program that is supposed to get rid of it, but after the "scan" they want $29.00 to be able to "fix" the problems... Anyway, I got so sick of it I went to "START-RUN- regedit and when it came up I clicked "edit" and then "find". Then typed in "tray app."
Then deleted every instance of it that regedit found. "delete-yes-f3" There were hundreds of entries and I deleted them ALL. DANGEROUS! But when I was done, I restarted my computer and it was GONE and the computer seems to be running fine. Even a little faster than it was. Hope this helps