by Phil.c » Tue Mar 22, 2016 10:19 am
If you have already saved a project as a startup and want a clean slate, open startup as Bruce said, save as with a different name, go to Desktop, click the HD icon once, you will see your projects, drag Startup to the toilet to delete it, when you boot up again, a new "Startup" will be there but clean this time.
Phil
PS. If you need to Zero the channels but keep your loaded effects, hold SHIFT and run your finger along the SELECTS of the channels you want to zero and hit the Cut/Zero Channels button.