I have a problem with one production server (physical machine Dell R620). That server is part of our ERP package and SQL server 2012 is installed on it. OS - Windows 2012 R2. That server is freezing up from time to time in weird way. Looks like simple processes working, I can ping that machine, see shares but I'm not able to RDP or login any way that server. Usually when freezes I need restart, there is no way. Sometimes clock is on the screen, sometimes screen is blank, Cnt-Alt-Del is not working. I tried restart or shutdown remotely from different machine using cmd or power-shell commands - no luck. I red tons of articles but did not find any good solution.
I don't even know how to isolate issue. There is nothing in event log or Dell server console. What kind of logs I should use ? Dump memory ? I red that Symantec client can make that issue. I have installed managed client v. 12.1.4112.4156. I will be moving from Symantec to Webroot pretty soon. There is one thing what I did not try, configure Virtual power button over Dell DRAC. Did you try that ?
Any other thoughts ?