Try this instead. It's from a Win 7 instruction, but may be the answer for you. You may have to do it from the actual folder rather than the start menu:
Click the Windows "Start" button and select "All Programs." Right-click the "Startup" folder in the menu and select "Open All Users." This option opens the folder for all users on the computer. Choose "Explore" to open the folder for the currently logged-in user only.
Right-click the folder or file you want started when the computer boots. Select "Copy Shortcut" from the menu.
Right-click any white space in the "Startup" folder opened in Step 1. Select "Paste" from the menu list. The program will now open the next time you start the computer.