Keyboard and mouse randomly don't work after boot

Hello there, I have been having a problem lately with the keyboard. Some times after the booting process it doesn't work, forcing me to restart my laptop even 3 or 4 times before getting it to work properly.
Here is the keyboard boot process. wich has actually a problem that I can't understand clearly.
dmesg |grep keyboard
[ 2.308714] atkbd serio0: Failed to deactivate keyboard on isa0060/serio0
[ 2.959550] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
I noticed this error during the boot preocess, how should it be interpreted?
I'm sure in the kernel, the device atkbd is selected.
The synaptics mouse instead, doesn't work properly in X
My mouse is a synaptic touchpad and when I start x, instead of loading the synaptic device, xfce simply see it as ps/2. Also this happens randomly.
dmesg |grep mouse
[ 2.098008] mousedev: PS/2 mouse device common for all mice
[ 4.836233] psmouse serio1: synaptics: Touchpad model: 1, fw: 7.4, id: 0x1e0b1, caps: 0xd04773/0xe40000/0x5a0400, board id: 3655, fw id: 631163
[ 6.696381] psmouse serio1: synaptics: Touchpad model: 1, fw: 7.4, id: 0x1e0b1, caps: 0xd04773/0xe40000/0x5a0400, board id: 3655, fw id: 631163
Xorg conf:
Section "inputdevice"
identifier "synaptics touchpad"
driver "synaptics"
Option "TapButton1" "1"
Option "TapButton2" "2"
Option "TapButton3" "3"
Endsection
Any suggestion?

Welcome to Apple Discussions!
Has your keyboard and mouse quit working altogether or just when the computer is hot? And do I understand that an external keyboard and mouse will work with no problems?
And I am wondering about your computer running unusually hot. Are your fans operating properly? You might want to run the extended version of the Apple Hardware test to be sure that the fans and thermal sensors are working properly. If they are not, you will get one or more error codes.
Another thing to do to check when your Mac is unusually hot is the Activity Monitor. Select "All Processes" at the top right and check for any process running that should not be which is using lots of CPU.
I don't know if the keyboard problem is related to the heat problem or not, but I would want to know what is causing the heat problem too. Over time, excessive heat can cause damage to the logic board. It could also conceivably damage the ribbon cable which connects the keyboard and I would guess that the trackpad could also be affected. So it is important to see what is going on here. If you have been experiencing excessive heat on a regular basis, this might be the underlying cause of your keyboard and trackpad problems. If so, the heat problem will have to be fixed or the other problem will recur over time.
Try the AHT and post back with any results. Also, use iStatPro to check on your fans and make sure both are running at roughly equal speeds and that they run faster when the computer gets hot.
Good luck!

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Keyboard and Mouse pad don't work.

Can anyone help me? I figured I should come here before bringing it to a shop.
I have upgarded my ram from 2gigs to 4gigs with Crucial ram.
Though regardless if I have the new ram or old ram in, my keyboard and mouse pad don't work. There were occasions before when the keyboard would lock up for a short while, but I have no idea what's causing this.
My only thought would be that sometimes my computer would get unusually hot, but i just turn it off when that happens.
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Welcome to Apple Discussions!
Has your keyboard and mouse quit working altogether or just when the computer is hot? And do I understand that an external keyboard and mouse will work with no problems?
And I am wondering about your computer running unusually hot. Are your fans operating properly? You might want to run the extended version of the Apple Hardware test to be sure that the fans and thermal sensors are working properly. If they are not, you will get one or more error codes.
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Message was edited by: AshleyH140

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After reviewing your post, it sounds like after you updated there are a few things having trouble. I would recommend that you read these articles, they may be helpful in troubleshooting your issue.
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
OS X Yosemite: If keys on your keyboard don’t work
Intel-based Mac notebooks: Troubleshooting unresponsive trackpad issues - Apple Support
USB and FireWire Quick Assist - Apple Support
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Keyboard and mouse randomly don't work after boot

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