Like this one? Looks nice, too bad there's no room for a CD drive...

http://sysadmin-vit.blogspot.ro/2011/02/unisys.html

Anyway, for AMI BIOSes 1long+3short beeps indicate a memory test failure, while for Award BIOSes the same beep sequence means video card or video RAM failure - I'd start with re-seating / contact-cleaning / replacing / removing some of the RAM SIMMs or video RAM chips.

A very neat pc! Do you have any photos to share? I love the power button, with no annoying 220v cables inside the case that can kill you if you aren't careful enough!

here are some pics, they are crappy becouse i took them witth my tablet, couse the batteries in my digital camera are empty xD

the system :

and this is what is meant to be played :

but unfortunatlly , this system is giving me headache , so I got myself a nice dx100 proc , PCI board and a couple of PCI 3d graphic cards , so when I find an original grim fandango I shall play everything under win 9x. ... couse this unisys system has an option of a PCI RISER card , butr I didnt find it ANYWHERE...

also , I have tried diffrent FPM ram , EDO ram , diffrent slots... maybe the board just decided...TO DIE 🙁

Sometimes the pins on the SIMM slots fail to make adequate contact over time. I noticed this one one 486 board I had. If I were to push the SIMM down really hard (as hard as I could, actually), and keep pressing it down while I turned on the computer, the system would turn on. If I let my hand go, the screen would go blank. Visually, I could not tell which pin was the problematic one, so I desoldered the whole SIMM and replaced it with another one and I've not had any problems since.

feipoa wrote:

Sometimes the pins on the SIMM slots fail to make adequate contact over time. I noticed this one one 486 board I had. If I were to push the SIMM down really hard (as hard as I could, actually), and keep pressing it down while I turned on the computer, the system would turn on. If I let my hand go, the screen would go blank. Visually, I could not tell which pin was the problematic one, so I desoldered the whole SIMM and replaced it with another one and I've not had any problems since.

Have you tried laying down a trace of solder on the contacts like some people do with video cards that develop deep grooves in the gold fingers after being plugged and unplugged too many times?

Nope. Perhaps if I knew which one or two pins were bad, this might work. To do it to all the pins would be pretty time consuming. I'd also be concerned that the RAM module would lay uneven, causing some pins not to touch, or some left-over flux causing a lack of connection.