Go to Google.com
Top right, click your account icon (the letter in a circle)
If this just says 'Sign in' and does nothing, click the gmail link and then click you account icon.
3. Click Sign out of all accounts
4. Try signing into your account again
With Chrome open, on the keyboard, press CTRL+SHIFT+DEL
On this window, change the 'Time range' to 'All time'
Click 'Clear data'
Close and re-open Chrome
Retry signing into your account