I have an older Mac Mentor scan tool with the black power button running the OTC Genisys 4.0 system. I went to use it today and when I went to cut it on, it went straight to a dark blue screen and then cut off. All of this was when it was hooked up to house current. I was going to check some reading I had done on a vehicle earlier this week. Anybody have any Idea what happened and how to fix? Thanks.