I was running down my home lake one day my unit was working fine then it shut itself off (which happened before due to a loose power connection which I fixed) when I turned it back on all I got was a black screen with a green lettered menu. The menu was a list of keyboard checks backlight checks etc. no matter what I try to do it will not do anything but bring up this menu. I really hope someone on here knows what this is and how (hopefully not if) it can be fixed. The unit it is only a year and I half old I don't want to have to buy another one. Any help would be greatly appreciated