Restarting hp49g+

[Joe Horn]

Sometimes a misbehaving library in memory can cause this. The only way out of such a TTRM loop is to poke a paperclip into the reset hole in the back WHILE holding down the backspace key. You may need to momentarily release and re-press the backspace key after the paperclip poke. When the backspace key is held down during the entire reboot sequence, no libraries are attached, thereby avoiding them causing trouble. You can then use the FILER to delete libraries one by one, rebooting after each, to discern which one was causing the problem by process of elimination.

If the problem continues after all libraries are deleted, then at least you'll know that the problem isn't a misbehaving library.