Please Find and Download MPC-HC Ver 1.7.6 (ebc29cf) and don't update player,Click VIEW Tab on left @end Click <Miscellaneous>Uncheck Box for -Enable automatic update check- . . . . . . Click <Formats> Under the Association Click <Modify> will open a new popup, In File Extensions Check the Check Box for each file format that you want to play, don't forget to click Apply after each change.
You will be able to configure Autoplay next video within the folder through PLAY Tab.
Even you can open multiple video file, Click VIEW Tab > Option > Player > Open Option and click Radio button - Open a new player for each media file played-