I don't have any info on what exactly was the problem but we've had three 2000x (out of 22) at the uni that were sent away for service during warranty that did not start correctly. One after 1 year, the other two after two years. One simply had a black screen, one would not finish booting but intermittently, one with failed device start-up routine. A technician suggested to try re-installing firmware.
The repair/service notes unfortunately never say what the issue was. Extremely nice full ANSI calibration with uncertainties for free though!