Well for a start you need to up your debug level to say level 5 and post the output. There’s not much info to work on from what you have given us. I’m not a Windows bod so may not be in a position to offer much help but give us your log output and that will tell us a bit more.
A stab in the dark on the running as admin-only: Like I say, I don’t do Windows but is there somewhere in your Settings/Control Panel that you can grant access rights to specific users rather than just the Admin login?