If it ran in Safe Mode, then I’m 99% sure the problem may be solved by reeinstallation, without the need for formatting. I still reccomend formating and reinstalling if your HD is old or almost full, anyway.
If it ran in Safe Mode, then I’m 99% sure the problem may be solved by reeinstallation, without the need for formatting. I still reccomend formating and reinstalling if your HD is old or almost full, anyway.