My name is Sawai. I'm talking about the touchpad for the notebook PC that I purchased from Joshin Web on February 18th this year. A515-57-A76ZJ/SF SNID: XXX I've been using the mouse 100% since I bought it, so I only noticed the problem about a week ago. I tried toggling the touchpad on and off from the system and tried fn+F7, but there was no response. In my opinion, it is an initial failure. It hasn't even been half a year yet. I don't know because I don't use a touchpad, but if there are any other parts of the computer that can be improved, please let me know. Since it was purchased less than a year ago, is it within the free warranty period? Thank you.