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Posted 14 July 2014 - 01:48 AM
Posted 14 July 2014 - 07:30 AM
Visually inspect all of your USB ports for damaged or shorting pins. A shorting USB port could cause this issue. The touch screen may operate from an embedded usb bus as well as your webcam/touchpad. Remove all devices connected to the usb ports of the computer.
It could be the touch screen/digitizer that is failing and causing a no post, since the digitizer was not working it might lead toward that assumption. Unfortunately to test this would require a tear down of the lcd assembly to disconnect it... We will worry about this latter. If there are no shorting pins in any USB port, move on.
If you can get access to the ram, remove all but 1 stick and try that stick in all slots, if you have more than one stick and the first didn't work in any slot, swap it with another stick and try that one in each slot. REMOVE ALL POWER when swapping or moving/removing ram.
If you have access to the bios battery from the bottom, remove your main battery, and remove the cmos battery to reset the cmos. I will look into your model a bit and let you know if there are any other simple diagnostic steps to take.
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