Posted by axptguy38 (98 days ago)
First step: is there any dirt under the key? Try blowing next to it and around it. Also flip the laptop over and see if something falls out.
As drm888 says, you may just be able to pull it off and check what is wrong. However note that many laptops have quite complex key mechanisms that don't lend themselves to self-repair. I consider myself a computer expert but I HATE having to fix keys on laptops.
If it is under warranty, call the manufacturer.
If it is not under warranty, take it to Wan Chai Computer Centre. My favorite computer fixers are Match Power. Shop 202-204, 2/F.