The Jargon File (version 4.4.7, 29 Dec 2003):

frotzed
 /frotst/, adj.

    To be down because of hardware problems. Compare fried. A machine that
    is merely frotzed may be fixable without replacing parts, but a fried
    machine is more seriously damaged.


The Free On-line Dictionary of Computing (30 December 2018):

frotzed

    /frotst/ down because of hardware problems.
   Compare fried.  A machine that is merely frotzed may be
   fixable without replacing parts, but a fried machine is more
   seriously damaged.

   (2010-05-16)