Question Thinkapd T420

Devmalya

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Mar 31, 2016
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I bought used machine last month thinkapd on olx (india version of craiglist) , after its delivery windows 10 installed cpu usage gets to zero system freezes and thouchpad left click button stops working as left menu only the right menu appears , after the installation of windows 7 same thing goes on i exchanged the ram with my t410 ram (good condition) , system didnt freeze but cpu usage remains zero . i saw 2 core were locked in resource monitor and I unlocked them but still reain the same issue . Cpu usage to zero.
Any ideas or sugesstion welcomed.
 
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