i did the sfc /scannow to check for corrupt files and it stopped at %50 with a corrupt file error. When i checked the cbs.log file, it showed no error. i have run the scan 5 times but still no results. Please help i have uploaded the cbs.log file.
If this is factory preinstalled Win7 that is a corrupt install to begin with, larded with bloatware and duplicate utilities that have better version built into Win7, smother and cause problems so you never really experience Win7's native perfect performance. That's why most tech enthusiasts prefer to Clean Reinstall - Factory OEM Windows 7 following the steps in the blue link to get a perfect install.