Each time you install VG, it will place a Shortcut to the "DeskTopVideo player" in the All Programs Startup folder.
This is the Shortcut that Cause VG to Startup with Windows.
If you Don't want it to Automatically Start when Windows Loads,
Delete this Shortcut from the Startup Folder.
Or you Can CUT and PASTE it to the Desktop.
Pictures:
1) All Programs, Startup, Right click on Desktop player, Select Delete..
or
2) All programs, Stratup, Right click on Desktop Player, Select CUT
3) Right Click on the Desktop and Click Paste to complete the Cut and Paste.