All,
Black screen cause can be many things, and the general approach to troubleshooting this is well described here:
https://kb.vmware.com/s/article/1028332
However, if you see the CPU spiked and cannot get into the machine even through the console, then I recommend using a professional EUC performance monitoring tool like Liquidware Stratusphere UX or ControlUp.
Using an EUC performance monitoring tool, you can look at historical data on a specific date/time on what CPU process was spiking, and what other activities were going on at the time -- like GPU spikes, network or disk IOPS. Correlating those activities with the CPU spike can give you the answer.
For example, a common cause of a CPU spike is antivirus software not having proper exclusions for Horizon processes/files and thus scanning the processes/files. You will get a CPU spike from the Horizon services and IOPS activity from the antivirus.
Sincerely,
Yury Magalif
