Also, thanks so much for the help. Really appreciate it.

If UAC is referring to the window asking for an admin password, then yes. I was not admin on the PC that is having problem now. But I WAS admin on the PC that is working properly now. Steam is not set as admin on PC with problem, nor arma. I am not in steam beta. My internet speed was recently increased on the download side, so I can most certainly try the dev build on PC having issue.

Also, forgot to add, all the links you sent have already been installed by Steam, so those ARE there. Just for some reason, which I'm sure the logs may explain, it won't see the Steam service and stay open.

The new updated launcher is still doing the same thing. Its telling me to make sure the client is running, which it is. Anyways, I uploaded both .rpt files in the \logs directory.