Pc laging after windows 7 update

Blitz Blitz

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May 18, 2015
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Hi, my pc starts laging when I updated windows. Should I reinstall pc, and disable windows updates? Now when I start browser, My cumputer, my documents and etc, windows comes slowly and laggy, when I close it, it's also disapears slowly. Pc is not new, but also not old(I think). 2430m - i5 with gt 525m. So what to do??? Also when I scroling down and up the websites, it's also laging. Sorry for english, and thanks.......