!!
critical HP
Error Code Screen Message: Memory Size Error (164) or Memory Configuration Error (201)
Incorrect memory setup or configuration encountered.
? What Causes This
Improper RAM type/seat or compatibility errors with the system.
✓ How to Fix It
Run diagnostics and correct DIMM configurations. Replace faulty components; system board may need replacement if problem persists.
Source: page 3 of the official manual
From the manual
This error code appears in:
HP Prodesk 600 G1 Small Form Factor PC