Hi!
We are experiencing the same problem. The HP-Z820 workstation reboots when the PCIe link goes down. I've tried changing the PCIe link speed in the BIOS to Gen 2 (our PCIe target is Gen 2) but without any change. I also tried downgrading the BIOS, but only v3.90 can be installed, which has the same issue. v3.8x can't be installed any more.
This reboot upon PCIe link down is new with using a more recent BIOS version, btw. Since few weeks ago, we have been using a much earlier BIOS version (can't remeber the exact version, but very likely something <= v3.8x). And with this BIOS version no such reboot happed upon surprise PCIe link down.
Did anyone of you get this issue fixed somehow? Does anyone have some other ideas what to test or how to downgrade to an earlier BIOS version?
Many thanks in advance,
Stefan