Need to change registry or security policies on PC

I am running into this problem where I try to log on to my Windows 10 and I get the message, "Security policies on this computer are set to show info about last interactive...."

I know it is caused by change in security policies / registry but I can't do system restore, repair, or reinstall. My question is, Is there a way I can access registry via safe mode without entering username & password or how about if I take out HD from that PC and connect it to my computer and somehow access registry files then once changes made put it back. I am not sure if anyone has come across this problem with many limitations. But your help in the two questions asked above will be highly appreciated.

Thanks

It was a time sensitive issue at work, there was no restore point created by the IT head and reinstall would lose files from desktop. Anyways, I did find a work around though.