Unable to consistently use my Admin Password
Booting iMac (21.5" Late 2009), OS X 10.13.2 system will not accept my Admin Password. Booting and opening in the Safe mode, system accepts Admin Password. If immediately restart, after booting, system accepts Admin Password. However, for any additional activity, such as making a 'bootable installer' using Terminal and entering recommended command, unable to enter password. Any other activity, such as opening 'help tool' in Tech Tool 9.6, system will not accept Admin Password. I am trying to boot in other than iMac HD in order to scan the HD for possible bad segments. Checking my backup via Carbon Copy Cloner shows all backups satisfactory.
Have check date and time zone, reset SMC and NVRAM?PRAM (not sure which I have), no change.
Tried to use the Apple Hardware Test, will not open.
Ran System Diagnostics with multiple pages of info which I can not read.
Console of course contains reams of data, with only this latest re a crash report: (only the opening info)
Process: Preview [577]
Path: /Applications/Preview.app/Contents/MacOS/Preview
Identifier: com.apple.Preview
Version: 10.0 (944.4)
Build Info: Preview-944004000000000~1
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Preview [577]
User ID: 502
Date/Time: 2018-01-08 00:35:23.974 +0700
OS Version: Mac OS X 10.13.2 (17C88)
Report Version: 12
Anonymous UUID: AC6BF201-F81C-F564-8A7E-250E89DF587F
Time Awake Since Boot: 2600 seconds
System Integrity Protection: enabled
Crashed Thread: 7 Dispatch queue: com.apple.root.default-qos
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000100000020
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
Any help much appreciated.
iMac, macOS High Sierra (10.13.2), 21.5" late 2009