Hi Greg, here you go:
When you formatted the memory card, di you do a full format or a quick format? - full format on my laptopWhat brand and size memory card is this? - I will have to double check, it's at home, but I believe it to be a SCANDISCHave you tried the memory card by itself with no files on it and see if the 999 unit still locks up? - No, I have notHave you tried the other memory card slot? - Yes, I removed my mapping card and tried the right slot, still locked up.