El Capitan keyboard does not not after reboot

I have a Macbook Pro 13 inch with OS X El Capitan 10.11.6

After one of the recent improvements, I met a problem, if I take my mac, the keyboard and the trackpad to respond enough lag (if I constantly try to move the cursor, he'll have a time and then for like half an hour it will completely stop responding and after this the other repeats). It only happens after reboot and only on the login screen. So if I put my mac to sleep and then wake up, everything will work perfectly. Same thing if I managed somehow to connect, once the keyboard and trackpad respond correctly. The only button that works fine after reboot is the power button, but it doesn't help much, because it charges does not solve the problem somehow: as soon as the user selection screen, keyboard and mouse stops responding again (or should I say "start answering from time to time").

I saw lots of questions here on the keyboard does not not after waking up, but as you can see, this isn't my situation.

Try again in Safe Mode.

Start up all by holding down the SHIFT key. It takes five minutes longer because it is a disk first aid on the way up, and you MUST provide your user name and password, even if you normally the automatic connection.

Tags: Notebooks

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