A classic StudioLive 16.4.2 mixer or a StudioLive 24.4.2 interacts differently then the StudioLive AI Series Consoles do. Firewire communication is the only way to complete a Factory Reset on these mixers. If you are getting this message on an AI Mixer, it could be related to bad firmware programming and it might be possible to do a Firmware Recovery process. We highly suggest StudioLive AI mixer users Contact Technical Support immediately should this problem occur.
If a StudioLive mixer is showing, "Startup, Please Wait..." it means that the file System is sitting within a prior boot load, that isn't finding a application to boot from. This normally means that the mixer is sitting like a computer would not able to "find an operating system." In this case, there are only two options to attempt to correct this.
A.) You can attempt a Factory Reset on your mixer using the instructions given.
B.) If this does not correct the issue, you will need to create a support ticket after logging into your PreSonus User Account to request a Return Authorization number and further instructions on how and where to ship your unit to.