Ssh keeps forgetting keys

This is the problem: I am using the Git Shell installed from GitHub for Windows. I have 3 ssh keys inside C:\Users\MyName\.ssh

:

• github_rsa (this is the key generated by github for windows)
• id_rsa (generated by me)
• tm_rsa (generated by me)

I inserted the key using this command:

ssh-add ~/.ssh/github_rsa
ssh-add ~/.ssh/id_rsa
ssh-add ~/.ssh/tm_rsa

      

        
        
        
      

    

Every time I restart my computer ssh keeps forgetting keys. if i do this command ssh-add -L

it only displays one key, usually github_rsa

.

How can I avoid having to enter keys every time?