Modern HP servers, among others, may display the following warning when booting RHEL7+ and associated flavours:

The BIOS has corrupted hw-PMU resources (MSR 30d is 330)

This can be safely ignored. However, if it bothers you, you can disable it thus:

1. Boot machine to RBSU (F9).
2. Press CTRL+A.
3. Select "Service Options."
4. Select "Processor Power and Utilization Monitoring."
5. Select "Disable."
6. Press F10 to save and exit.
7. Reboot.

Per HPE advisory https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03265132