open windows exporer, go to tools, folder options,view, remove the check from "hide protected operating system files"you can then view the c:\recycler folder, right click on it and left click on empty. then go back nad place the check back in "hide protected operating system files"this should cure the problem
I am aware that the C:\Recycler folder on a Windows Operating System is where all the deleted files go. If you go to "Tools> Folder Options...> View >" in a explorer window and uncheck "Hide protected Operating System Files" you will be alerted with a box saying it is un davised to do this. Click ok and navigate to C:\ drive and you will see it and be able to navigate it. Also try this in command prompt... ">CD C:\RECYCLER>DEL OASIS.exe"
This is also possible in safe mode, to get into safe mode go when booting Windows press F8 repeatedly and you will eventually get a "advanced boot options" menu. Select "Safe Mode" and boot up like normal. You will get a box reminding you that you're in safe mode and you should login as Administrator. Then delete like any other file. I would advise restarting your computer straight away so you avoid any mistakes.