I leave the laptop after working at sleep mode and next day when I again start working on laptop some keys of keyboard like 4,5,r,t,f,g,v and b stop working.What should I do know?
I restore the window but problem still exist,I check the device manager but keyboard is looking fine there.
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Hi,
Try plugging in a USB keyboard. If it works OK then your laptop's keyboard is failing and needs to be replaced.
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Hi,
I know sir that was my last shot but I did some research online and almost I tried all the methods but these buttons are not working.
But I want to know that is there any chance that keyboard ribbon which was attached with motherboard have some problem.
Hi,
The keys on a keyboard are wired in a matrix arrangement so that when a key is pressed the controller "in the keyboard" knows what signal to send to the controller on the motherboard. This arrangement is done to reduce the number of wires between the keyboard and the motherboard, otherwise for example with a 104 key keyboard you would need 104+ wires. I would think that the problem is more likely to be a broken connection in the keyboard matrix than the ribbon connector cable. It is also easier and certainly will cause less problems if you replace the keyboard than try to fix it.
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Laptop keyboards are made of several layers sandwiched together. I suspect one conducts electricity when it is pressed to circuit board below it. I think that layer becomes worn in areas and so never completes the circuit.
Easy and cheap enough to replace the keyboard unless you have very old laptop and replacement keyboard is no longer available.
Can that middle layer material be obtained? TV remotes can be repaired by grinding pencil lead and affixing to that middle layer to complete the circuit. Might work for Keyboard.
After using my 18 year old laptop that runs Linux, it's keyboard has been replaced many times I noticed that when I closed the lid with the laptop running that the keyboard was warmer than usual. I now never leave the lid closed while laptop is running or else put it in suspend before closing the lid to keep the keyboard cool. Keyboard is now lasting longer.
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