Invalid Drive: E and TrayApp keep popping up when I try to get into my computer. It looks for TrayApp but can't find it, then a box that says Invalid Drive: E pops up several time and I get rid of them by clicking on the red X at the top right corner. But, it is agravating.

Can you fix Invalid Drive: E and another box that keeps popping up called TrayApp?

Well it looks like this TrayApp program is looking for an installer in the E: drive.

Easiest fix would be to UNINSTALL TrayApp.

Failing that rename your CD drive to E: and follow the prompts.