[Sunhelp] Sparcbook 3GX hardware reset??

[skelley at chelafin.com]

I've got a Tadpole Sparcbook 3GX running Solaris 2.5.1.  I can telnet to it
but not log in -- (no users other than root) and the X server will not
refresh the windows on the screen.  Mouse and keyboard work, but there is
no "active" window receiving the input.  Suspending it doesn't help, as it
always restores back to the same situation.  I cannot get to the Ok prompt
to boot again--and the power switch forces a 'suspend' instead.  Any ideas?
Is there a hardware reset switch?

Thanks!