https://www.ebay.com/itm/334192303756
Anderson, California
XP486 8595-0KD. Looks to be Spock, Serial card, early 16/4 [DB9 only],
and XGA [assume].
"Powers up. Numbers come up on little digital screen. About a minute or
so in it beeps and screen goes blank. Computer sounds smooth as it runs.
I have no way of testing further. Case is dirty and dusty. Did not take
apart. I think case can be cleaned further but did not want to use
something that would discolor it."
I'd guess it is misconfigured. Would have to see installed cards and
complex. Possumble video card is misconfigured, maybe downlevel refdisk.
If it still has the "K" complex, it might be related to the hardware on
the complex.
Not having the ability to run the refdisk and diags, I can't be certain.
But... it does power up. It displays CP codes.
My spidey sense hints it will work after being stripped down, then you'd
have to re-install cards and memory.