PS/2 keyboard on one of my HP laptops stopped working [[Solved](/forum/keyboard-126/solved)/Closed]




 I just wanted to verify that this actually works!
  

  
The PS/2 keyboard on one of my HP laptops suddenly stopped working, for no apparent reason.
  
Checking control panel indicated the keyboard "was working properly", but of course, it was not.
  
Perplexing . . .
  
Then I searched here, found an entry from a few years ago that suggested powering down, completely unplugging the power supply, AND removing battery for a few minutes.
  

  
Have no idea why this works, but, amazingly, put the battery back in, powered up, and the keyboard now works perfectly!
  

  
Maybe this is something lurking about in the BIOS (just a guess on my part), but this really does work.
thanks for the tip
> Hello. I have an HP Pavilion 4500 laptop and it won't turn on. I've tried everything to get it to turn back on. There are no flashes or beeps or anything when I hit the power button. Also, before all this came up, my charger wasn't charging correctly. It would turn on then turn off repeatedly. Then one day, my laptop shut off and didn't come back on anymore. I haven't been on my laptop in about 4-5 months now. Could someone please tell me what might be wrong with my laptop?
> 
> 
> Thank you so much! :D
> 
> 


you havent used it in almost half a year!!!! get yourself a correct charging unit for it that works properly and charge it. leave it out in a warm spot for a day before hand though. it sounds like its gotten very cold internally and also all the battery power has seeped away to nothing. this happens with rechargable batteries after a while. of course you wont get anything when you've got a dead battery. sounds like the charger you have already may be defective or your current battery is defective at least.  

At the other end of the scale though it could be that you laptops power supply unit has become defective and maybe that has blown.  

Rule out the simplest options first of it being the charger or battery. if theres no joy take it down to a local computer engineer and get them to have a look. be prepared to spend a little dosh on it.



btw what r your laptop specs?? might help us.:D pat, sorry to read about your notebook issue.  be assured that i have been monitoring this post and see that you have received very helpful input.  if you're not able to duplicate the memtest86 hit, you may want to scan for "infections" as andre s. recommends.  however, along with malwarebytes, i would also run tdsskiller and combofix.   after doing this and the laptop still freezes, you may want to contact hp's excellent elite premier support team at 866 625-1175, especially if this model is still under warranty.  you also may want to pm me with the product number, serial number so i can get a case started for you or so we can discuss some hp options if out of warranty. Hello,  
  
Put in new batteries and try again.  
  
If new batteries did not solve the problem, the next thing to check would be the battery terminal.  
  
If
 the battery terminal is rusty, the battery power won't contact and the 
calculator won't turn on. So, use a flat small screw drive to scratch 
the battery terminal so that there would be contact.  
  
If the above
 is not the problem, the next to check would be the wire connecting the 
battery terminal to the the calculator's main board. There is a wire 
between the battery terminal and the calculator board. When the battery 
is inserted, the power from the battery goes from the terminal to the 
board through this wire. There is a possibility that this wire is cut 
in-between or is loosing contact. In this case, you need to get a small 
screw driver and carefully disassemble the calculator in order to check 
the wire.  
  
If the wire is intact, use a light brush to brush the calculator board as there might be dust on the board.  
  
If non of the above helps, then it means the calculator is dead and needs a replacement.  
  
Regards. HP have indeed recently released a firmware update that disabled the use of some remanufactured/compatible units. We have however since then sourced alternative stock, designed to work with these firmware updates. Any printer found listed on this page is guaranteed to work and we are always more than happy to help if you ever have any future issues. It could be a problem with static discharge , if so do the following.


1. Disconect the power cord


2. Remove the battery


3. Hold down the power button for 30 seconds , then release for 30 sec and then hold down for another 30sec


4. Plug in power ,replace battery and power on laptop.


If this causes no Joy try this.


Remove memory and reinstall one stick at a time, if there are more than 1 dimm of ram, try each stick in each slot one at a time to see if the memory is ok and to determine if one of the memory slots is bad.


Hope this helps have added psu to above post. (i added specs because i knew someone would ask. however i think it's a software issue.)

unlikely that it's the psu.

the current psu is a hx750i, and the previous psu was a hx650i. swapped over a year ago at least. this is a recent issue.


good, a lot of times this is the psu. but with an excellent unit, that's far less likely.

were you monitoring temperatures at the time? was there something specific you were doing similar in both times? really intermittent things can be hard to nail down. disconnect the integrated keyboard and try only using it with the external keyboard hi everyone, just to close this topic, i could get a proper power supply and in fact it was the problem..

thaks everyone for your time and help ! the softest way to power down the system is using the gui or:

systemctl poweroff

the second one is:

shutdown --halt now

and then pressing the power button lightly.

for more ways of shutting down your computer, see this excellent cough, cough article:

[image]

[how to reboot / t…](https://archived.forum.manjaro.org/t/how-to-turn-off-your-frozen-computer-reisub/124762/1) Member, below are the best steps to unlock BIOS password in a Lenovo desktop or laptop.  
  
**For computer**  
1. Turn off your system and ensure its unplugging.  
  
2. Now, open the CPU case.  
  
3. There on, look for a circular silver metallic object. It is the CMOS battery.  
  
5. When you find it, remove it gently and reinsert.  
  
That is all, your system BIOS password will no more appear before you. Happy boot!  
  
To unlock the forgotten BIOS password in a laptop is a bit tough to do but not impossible. Go through the reference URL below and learn the way for how to unlock BIOS password in Laptops.   
For