Acer NT0T JV01_PT KB.I100A.003 用户手册

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Chapter 4

Remove and recently installed hardware or software.

Restore system and file settings from a known good date using System Restore. 

If the issue is not fixed, repeat the preceding steps and select an earlier time and date.

10. Reinstall the Operating System.

11. If the Issue is still not resolved, see “Online Support Information” on page 213.