Origin Won't Install; Cannot Play the Game

@btn29 

Try to clear your Origin cache.

• Close Origin completely.
  (right click on the Origin symbol in the task bar > close)
• Press the Windows key and "R" at the same time.
• Type or copy and paste "%ProgramData%/Origin" (without quotes) into the new window > hit ENTER
• Delete all the files and folders in the Origin folder, except for the "LocalContent" folder.
  (The "LocalContent" folder must remain untouched.)
• Delete the "Mass Effect XX" folder inside the "LocalContent" folder.
• Press the Windows key and "R" at the same time.
• Type or copy and paste "%AppData%" (without quotes) into the new window > hit ENTER
• Now your Windows explorer should have brought you to your "C:\Users\>your user name<\AppData\Roaming" folder.
• Delete the "Origin"  folder inside the "Roaming" folder.
• In the address bar of your Windows explorer click on "AppData".
• Open the "Local" folder.
• Delete the "Origin"  folder inside the  "Local" folder.
  
  

Even if Origin is not installed, we need to purge left overs from previous installations.

look at this guide. to preform a clean uninstall of Origin.

• Scroll down to "How to uninstall the Origin client the hard way"
• Follow the instructions to the letter until you reach "Last, remove your Origin program cache".
  (We already did that in the steps above.)
• reboot.
• Download this version of the "OriginSetup.exe"
• Run the installer as Administrator (Right click the "OriginThinSetup.exe" > Run as an Administrator) > Test.