laptop built-in keyboard AND mouse

December 27, 2005 at 14:39:12
Specs: XP home sp2, AMD - xp -M 2600? / 256 R

hey all,

i am having a major problem with my keyboard and mouse that are built into my HP ze4805us laptop computer. they just stop working and then later work again, and then stop working again. the mouse begins to go crazy so that when i move it it doesnt go where i want it to go and it flicks across the screen alot, and all the keys on the keyboard just stop working.

then i'll restart, and most of the time it will work for a few minutes and then the problem will come back again. sometimes i dont need to restart and it starts to work again just fine (as it is now when i type this), but then it will go crazy again.

I have no idea what the problem is. Is it even a software of a hardware problem? this only started a few days ago and i havent dropped the computer or spilt anything on it. [note the problem has just started againand the keys are being replaced with other characters. i am using on screen keyboard to write this now. s[[
\ss ss
\[ p]o[ = see this is the problem.]

i have barely moved since starting this post, but could it be a loose component inside? idont know how else to explain its randomness. or is it software? if i plug a mouse in then that one works fine though built in one is still broken.

please help.


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#1
December 27, 2005 at 14:48:44

I would say that it's almost surely a poor connection inside. It sure doesn't sound like a software problem. You probably should take it to a HP repair facility.

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#2
December 27, 2005 at 15:01:45

hmmm i have made another odd discovery.

if i constantly click the caps lock on and off on the ON-SCREEN KEYBOARD then eventually the light on the computer will flick on and off on the computer and the keyboard will be fixed. then it will start to randomly act up again a few minutes later. would it still be hardware problem even if i can temporarilly curb it using the on screen keyboard software?

thanks for your reply by the way, i am looking for a service center though i doubt i can afford to get it checked and the warranty is over.


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#3
December 27, 2005 at 16:45:38

I would still bet on a hardware problem, but you could try removing the keyboard in the Device Manager. Windows will restore the driver on the next boot. You could also do a format/restore of your HP software to see if that makes a difference.

If it does appear to be hardware, most repair shops will give you a free estimate.

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#4
December 27, 2005 at 19:57:51

thanks ham,

i did reinstall the keyboard yesterday and it had no effect. hp were no use whatsoever, having me adjust the sensitivity of the mouse, telling me to reinstall the keyboard which i told them i had already done to no effect, and making me install drivers i had anyway.

it worked for a good few hours earlier before messing up again. i am willing to agree it must almost certainly be a hardware problem. i just can't figure out what would have caused it in the first place.


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#5
December 28, 2005 at 10:00:30

One possiblity is corrosion on a connector. Also, inside integrated circuits there are millions of minute connections. Expansion and contraction caused by changes in the ambient temperature along with vibration can sometimes cause one of them to split and partially open up.

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