Re: Mass Effect 3 keeps rebooting my system

@AbC2563a9120374 I suspected it was hard drive related due to the stated issues with the install process, and I'd recommend running the chkdsk anyway, to at least discount HDD issues. 

Thanks for the extra info though, the videos you mention are stored at C:\Program Files (x86)\Origin Games\Mass Effect 3\BIOGame\Movies and are in the binkmedia format (.bik)

I suspect there's an issue with the video player used, possibly due to the previous install issues.

As a test, and if you're familiar with changing filetypes and using different media players, you could copy some of the .bik videos from the location mentioned above. Convert them to .mp4 and check if they play in wmp without issue. I suspect they will, but it's an easy enough way to discount issues with the actual video files themselves. 

If the videos themselves are corrupt, right-click the game panel in Origin and choose the repair option, let this run and hopefully it will do so with issue. 

If this has no effect, or you encounter a problem while repairing, please uninstall the game (you can try backing up the entire Mass Effect 3 folder to save on a redownload) then uninstall Origin using the steps in this article: https://help.ea.com/nz/article/manually-uninstalling-origin/

Restart with a Clean Boot then freshly reinstall Origin. If bandwidth usage isn't a concern I'd then redownload the game, being sure to keep an eye open for any prompts from Windows' user account control or your security software. 

Let us know how you get on, thanks again.