This how you installed fell off keys or keys that you lost. There are few others techniques you can follow if these don't work. Contact Acer Customer Service Number 1-800-875-398 for a quick solution all seven days to resolve any other issue related to Acer laptops.https://customer-help-number.com.au/acer-support-australia.html
If you are an Acer device holder and trouble with broken keyboard of your Acer Laptop. Don't need to worry, you can call at Acer Customer Helpline Number 1-800-875-398 and get the solution immediately. https://customer-help-number.com.au/acer-support-australia.html