Hardly typing in login screen only

[ShadiSoliman]

I have old Macbook Pro 2010, installed on it OS X El Capitan 10.11.6, I have new weird problem now
when i open my laptop and reach the login screen, and start to type my password my keyboard is very heavy and slow, i hardly can type my password and after suffering and login into my account my keyboard working fine normally as i m posting and typing now so fine ... what is this and what is your advices ?...
Thanks in advance

 

[Capt T]

Do you have any external drives or other peripherals plugged into it? If so try unplugging, reboot and see if it still is slow logging in without anything plugged in.

 

[ShadiSoliman]

Do you have any external drives or other peripherals plugged into it? If so try unplugging, reboot and see if it still is slow logging in without anything plugged in.

No, i ve no external drives plugged in.. :/