Pattern to record: The firmware rejects a previously bootable system after an update or board change.

Record the boot configuration

A managed business PC may depend on an approved Secure Boot policy, TPM state and recovery credentials. Record the exact warning and recent change before resetting firmware or replacing hardware. One possible explanation is that trusted keys and the installed loader no longer agree.

Preserve recovery options

Security resets can make encrypted data inaccessible without recovery credentials. Clearing keys without approval can break managed security and encryption.

Firmware and hardware checks

1. Record encryption status and approved policy before changing TPM or Secure Boot settings.
2. Record key state and verify the operating-system loader and organisational policy.

Recovery and startup checks

If the checks support this cause, restore approved keys or repair the signed boot chain. Verification should cover authorised sign-in, restart, updates, encryption status and managed applications.

For an assessment of your business computer, contact AEPC in Burswood or call 027 908 8880. Provide the model and the conditions that reproduce this problem. Workshop visits are by appointment.