Non-responsive Keyboard & Touchpad

Acer Aspire 5100 Laptop belongs to college student nephew - trying to troubleshoot non-responsive keyboard & mouse.  Boots to desktop, eventually times out and shuts itself down after 5 or 10 minutes.  Will not respond to keyboard, touchpad, or usb mouse.  Won't boot to safe mode or go to setup screen.  No keyboard response before or after windows loads.  Have forced it back to a Windows repair screen through forced power-down, runs through lengthy repair process and comes back to same condition.  Is there anything else to try before I box it up and send back to Acer for repair?  Seems like it should be a solvable problem, but no magic I can "conjure" up to get at the tools???
jeffkosterAsked:
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Computer101Connect With a Mentor Commented:
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Joediggity2Commented:
Is it the built in keyboard/mouse or an external.  Try an external to see if it is a problem with the keyboard/mouse.  If that is the case, then it may just be the keyboard ribbon cable needs to be reseated.  Generally it is only a few screws that need to be removed to lift up the keyboard and check the cables.
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Joediggity2Commented:
Also, Try using Fn + F7. to turn touchpad on and off.
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Joediggity2Commented:
I found this on another site...it sounds like this is common with this particular laptop.

Hard power-off (hold the power button until the laptop turns off)
Unplug the AC adaptor
Remove the battery
Plug in the AC adaptor
Hold ctrl and turn the power on. You should arrive at a black screen.
Hard power-off again, then turn the power on.
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jeffkosterAuthor Commented:
Thanks for the responses - I tried a USB mouse which did not work, don't have a USB keyboard I can try.  Fn + F7 gets no response, and I found the same power down/power-up routine you recommended and tried it last night before I logged my question.  Shipping it out for Depot repair this morning.
Thanks for trying.
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vermontcomputingCommented:
I've got the same issue. Keyboard, touchpad non responsive. Also none of the usb ports are responsive either (to ext. keyboard or mouse). with HDD removed keyboard is still unresponsive. Lan port, WLan switch, and power button are the only things that work.
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