New
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I would say delete the old font, reboot, then install the new one. No safe mode whould be needed.
Fonts - Install
A Guy
OK A Guy. Thank You Very Much. I Have Delete SimSun-ExB Font In Registry Editor And Now My Korean Language Is Showing
Is it a Korean language operating system? If not, you probably have to take ownership to delete them. If they are in use by the OS, you do not want to delete or you will have problems. In that case, you might try resetting fonts to default.
Start> In search box type fonts> Enter> Font settings on left> Restore default font settings
And/or run the System File Checker
SFC /SCANNOW Command - System File Checker
A Guy
A Guy