IIfx Garbled Graphics/Artifacting After Zapping PRAM?

[Concorde1993]

Ran into a weird issue with my IIfx tonight. It would hang at the desktop when my Apple external drive was connected through SCSI. I figured zapping the PRAM would return everything to normal (and it did, for the most part anyway, as my external devices are communicating once again with the IIfx).

But now I get this graphics issue:

Is this the sign of a failing PRAM battery or am I looking into something bigger, like my 8.24GC card heading into retirement?

 

[PappaDF]

If you toggle bit/pixel-depth under the Monitors control panel and restart, does the problem persist? (I assume the answer is "yes" - but just want to double check)