Needs Some advice please on my Lowarnce Hook5

I wanted to lower the gain on the screen fron high to medium and accedentally hit a button, I do no know which one but i am not able to bring up my chart plotter. I lost the Montery bay chart.
Has anybody experinced this and if so how do I fix it.
I will not hit the salt until it is back up.
Thanks
PM me if you want to talk by phone

Never had that particular problem, but if you know your preferred settings, you can do a system reset.  Not too painful and I've had to do it a couple of times for different mistakes on my part.

Your chart should be stored on the SD card, and a system reset will not affect the data on the card.

Is there a button that looks like two pages? That may have been what you hit.

That button changes the screens that show, so you might be in sonar only mode.

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