First try System File Checker.
Search cmd (Run as adminstrator by right clicking on it). Type sfc /scannow.
After use Blue Screen Viewer to check the error dumps during the most recent blue screen of death. http://www.nirsoft.net/utils/blue_screen_view.html.
Or run combofix as stated by mIKe. Very useful against corrupt windows files and malware.
Search cmd (Run as adminstrator by right clicking on it). Type sfc /scannow.
After use Blue Screen Viewer to check the error dumps during the most recent blue screen of death. http://www.nirsoft.net/utils/blue_screen_view.html.
Or run combofix as stated by mIKe. Very useful against corrupt windows files and malware.