Hi, the first guru is related to expansion memory (since it has address C01570) and you said it was booting nothing, so that looks suspicious.
Not sure about the second guru. It is a very high address (and not 'HELP'). Not sure why the computer is even looking there. Perhaps it is caused by dodgy expansion memory directing the program off into the never-never.
i.e. the second guru might be caused by dodgy expansion ram, or might not. The first looks very likely to be the expansion.
Someone else might be able to help with a memory check suggestion.
