Hi there, thanks for your time. I found an article that mentioned to rename the file extensions for "application.evtx, system.evtx, and security.evtx (all located under C:\Windows\System32\winevt\Logs), then restart the Windows Event Log service. I attempted this while booted into Safe Mode and ran Windows Explorer as Administrator. I rebooted into normal mode and the Windows Event Log service started automatically and I was able to get back into the Event Viewer.