Behavior strange iMac

My iMac is only around the age of five months. (iMac 5K, 27 inches, end of 2014) In the first month, he began acting strangely.

Happening every other day, then every day, now, maybe two or three times a day.

If I leave on for some time, it was impossible to all suddenly typing in the search bar of safari (or amazon, etc.). Each letter would take a few seconds to appear, and the popup of alternative character would start to appear on the letters. Then, when I choose to restart, in the "are you sure...". ' popup instead of an icon of power in one button circle, it would be an arrow in the circle. Reboot would be back to normal, but now more and more short periods.

I was hoping it would be after the OS updates, but it's just got worse.

Everyone this experience or has an idea of what might happen?

This keyboard exact problem happened to me 3 or 4 times over the last two months, with the extra trouble losing volume control (it will either mute or maximum). Restart usually solved it but not this last time (yesterday and today). He seems to have stopped in itself allows me to type this. You wonder if it's a question of bluetooth.

I got this imac for well over a year, the problem does not appear until I "upgraded" to El Capitan. Hmmm.

I understand these things myself, but I can call it Apple support next time.

iMac (27 inch, end 2013) El Capitan 10.11.3 Version

Tags: Mac

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