Acer Aspire P3-131 User Manual page 18

2. Disconnect the AC adapter.
3. Use a soft, moist cloth. Do not use liquid or aerosol cleaners.
If either of the following occurs:
• The computer has been dropped or the body has been damaged;
• The computer does not operate normally
Please refer to "Frequently asked questions" on page 54.
18 - First things first