restart your computer, and as soon as you pass POST (Power On Self Test) and BEFORE you start the boot sequence into your os, start hitting F8 on your keyboard. it might take a few tries before you get it right.

a menu will pop up giving you various options, choose safe mode without networking (for security reasons)...when you now get into your OS things will look weird, don't worry about that...then do your deletion and clearing of your trash can...

reboot, and things should be back to normal as far as what you visually see, and the files will have been deleted