Former HPE Products
Showing results for 
Search instead for 
Did you mean: 

My Bleeping Z800 server chassis


My Bleeping Z800 server chassis

AFSIK, this z800 chassis is possessed.  I might have missed something during my troubleshooting process but what? Our company uses Z800's for editing video and I have fixed many of them.

The problem with this chassis is: The fans start running as soon as I plug in the power cord. I changed the motherboard, the PSU and the 2N3903 ambient sensor in the wiring harness.  The fans still run, forever...

This Z800 stopped working, during the evening of a electrical storm. It was on a surge protector and nothing else in our network had any problems.

A surge may have come in through our HDMI network, through the monitor common ground, but no other devices were affected.

I have more time spent working on this unit then it's worth but now it's my personal pride keeping me going.

I would have thought, pressing the CMOS reset, on both motherboards I have tried, would have canceled all knowledge the unit has, about the last failed startup. Everything is disconnected from the motherboard except the fans. I even disconnected the Start button connector! It still starts the fans.

I've tried a 10 second reset on the PSW. Did not help.  I get 3 beeps after I pull the AC plug but I've changed the CPU in this replacement motherboard.  What else could it be? H.E.L.P. please

Community Manager

Re: My Bleeping Z800 server chassis

HP Z800 Workstation is a product of Hewlett-Packard Inc. (HPI), which is a separate company. For information and support on HPI products, please see or the HP Support Forums,


Hewlett Packard Enterprise Community Manager
Any personal opinions expressed are mine, and not official statements on behalf of Hewlett Packard Enterprise