Google website certificate problem

Symptom:

1. When you go to Google website, it displays a certificate problem, and 3 options. Among the 3 options, there is 'Continue to ...'. If you click 'Continue to ...', then you can view Google website normally.

2. When you turn your computer on, it prompts you to press F1. If you press F1, then your computer boots normally.

3. System time is incorrect.

Solution:

Synchronise your system time. After your system time becomes correct, both symptom 1 and 2 are gone.