Q:

HP ProLiant DL380 Gen9 : does not detect USB keyboard/Mouse after legacy BIOS boot up

I have a HP proliant DL380 gen 9 which was working just fine, but after a reboot both the USB keyboard and mouse are no longer detected after the legacy BIOS startup.
I tried to use them directly connected to the server, and to go through the iLO card, but it does not respond.
To me, I have to proceed to a factory reset, but maybe there is another way ?

A:

Sometimes KVMs can be problematic on HP servers... Especially cheap KVM switches. Please check this post and follow the troubleshooting decision matrix:
HP ProLiant DL360 G7 hangs at "Power and Thermal Calibration" screen

