Driver_power_state_failure BSoD 0x9f

i have been frequently been getting this error for over two weeks. I'm not a computer guy so i don't know what to do. I was wondering if anyone could help me out here =/
 
How to find and post your Minidump Files:

My Computer > C Drive > Windows Folder > Minidump Folder > Minidump Files.

It is these files that we need (not the folder). Attach to your next post the five most recent dumps. Notice the Manage Attachments button at the bottom when you go to post the next time. You can Zip up to five files per Zip; if you only have one or two you don’t need to zip them, just attach as is. Please do us a favor and don’t Zip each one individually.
 
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