You can reset iDRAC Password using "iDRAC6 Configuration Utility" during boot. You will get an option to reset root password or reset the iDRAC configuration to default on this utility. You can find more details on this in below link on section "Using the iDRAC6 ConfigurationUtility" on page 299 [URL]     
Hello, I have an old poweredge R710 server with an idrac6 card. I had previously logged into the idrac card and I have forgotten the password to it. I have looked up how to change it and all of the tutorials either mention this button on the front of the server (which I don't have) or some software that is for an outdated os, or is outdated itself. Does anyone know how I could reset the password to my idrac card? EDIT:  It is running windows 10 home
R710 IDRAC6 forgotten password