¿Do you have a strange power saving mode enabled? PROXMOX MSG

Hello very good afternoon community

A day ago my DELL T40 server with proxmox 7.3-3 started showing this message on screen and syslog:

Mar 12 03:58:59 MXBLCH kernel: Uhhuh. NMI received for unknown reason 3c on CPU 0.
Mar 12 03:58:59 MXBLCH kernel: Do you have a strange power saving mode enabled?
Mar 12 03:58:59 MXBLCH kernel: Dazed and confused, but trying to continue
Mar 12 03:58:59 MXBLCH kernel: Uhhuh. NMI received for unknown reason 2c on CPU 0.
Mar 12 03:58:59 MXBLCH kernel: Do you...

Read more