Notebook with high CPU usage when connected to domain network

I have a client with notebook with Windows 7 installed. This notebook is part of a Server 2012 domain. He is primarily in a sataliite office that's connected to domain over VPN. His notebook was working fine. Until a couple day ago when he was at the main office and attempted to log into his user account while on the local network. He was presented with the login prompt, but then it just showed the spinning graphic and never completed login. Back at this sataliite office it now was doing the same thing.

I picked up his notebook. Brought it back to our office, on different network of course. I was able to log right into notebook with both his domain account and the local administrator account. I've reviewed the event log files and the only error was related to Component Services permissions. I ran both chkdsk and sfc on drive. No errors.

I returned the notebook to clients office. It started to do the same thing again. I was able to get it to login under local administrator account and run ProcMon. I filtered down to just the process (svchost) that was using all the CPU resources. In procMon I could see that it was accessing writing & closing the edb.log file continusly.

I've now have the notebook back my office and it's working fine on my network. Any thoughts?

Thanks, Lee