After a power cycle, the GC was running a startup calibration and then went to hold status. This is because the GC startup mode was set to "Previous Mode". To set this, login to PCCU, connect to the GC, make sure you are in expert mode to see all parameters. Navigate under Analyzer Operation, and then click on Cycle Control. On the right side, click the Power-Up Options tab. Set the parameter "Process Mode After Startup" to Run.