I was using Microsoft windows vista operating system installed on my Lenovo ThinkPad X200 laptop from last 1 year. I wanted to upgrade my operating system so I checked the system requirements of windows 7 for my laptop. As all the requirements were met so I installed windows 7 operating system. After the installation of windows 7 when I restarted the system I am getting a blue screen with Driver Power State Failure error message. I need solution to troubleshoot this problem.
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