Lenovo T400 Graphics Switching Not Working

So, after a long day at work, decided to fire up a shooter on my T400, switching it to dedicated graphics. Unfortunately, after getting my ass handed to me, and switching back to integrated, the laptop now freezes. What could be wrong? :sweat:
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More about lenovo t400 graphics switching working
  1. I believe you have to check your BIOS settings, which controls the fast switching of your Lenovo. Check the Display section of your settings.
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