BSODS after playing games of league and now computer wont boot up .

[Hungfl]

After playing a few games of league on my dads computer it just started blue screening and now the computer won't boot up and shows only system repair and start the computer normally . I'll take a picture of the blue screen and post it up as well since I'm typing this on my phone . I'm sorry if this is too vague but I don't know much I can do since it can't even boot up sucessfully. Please and thank you ;u;

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[Dsprague]

have a look at this tutorial: http://www.sevenforums.com/tutorials/219533-troubleshooting-windows-7-failure-boot.html