You can check computer configuration by Below four Step: Click Start Click Run Type dxdiag Press Enter Then Read Computer Configuration by click on all tabs. ------------------------------------------------------------------ You can delete computer extra file from c drive. It keep save or free your computer from hang. Click Start Click Run Type Prefetch Press Enter Select All file then Press Shift+Delete Click Yes Again Click Start Click Run Type %tmp% Press Enter Select All file then Press Shift+Delete Click Yes Your Computer is totally free from Extra (temp) file. if do not be delete any file so you will be remember that your computer attract by virus. Thanks