Click Start - Run - and type in:
services.msc
Click OK.
In the services window find each of these, one at a time:
Microsoft authenticate service (MsaSvc)
Right click and choose "Properties". On the "General" tab under "Service Status" click the "Stop" button to stop the service. Beside "Startup Type" in the dropdown menu select "Disabled". Click Apply then OK.
Exit the Services utility.
Note: You may get an error here when trying to access the properties of the service. If you do get an error, just select the service and look there in the top left of the main service window and click "Stop" to stop the service. If that gives an error or it is already stopped, just skip this step and proceed with the rest.
Run HJT again and put a check in the following:
O23 - Service: Microsoft authenticate service (MsaSvc) - Unknown owner - C:\WINDOWS\system32\msasvc.exe (file missing)
Close all applications and browser windows before you click "fix checked".
How is it running now? Any problems?