Pls, can someone help a brother man from this issue of "s" button not working on HP 15 laptop after I did an update. Note, it had been working perfectly while I was using windows 10 until I got an updates which I did since then it stopped working. I have done a formatting things and I have drived it with no avail. Any solution will be appreciated. Thanks to the engineers in the house.

You are lucky op,know why? I think its a software issue,since the issue started after an update,assuming it was as a result of soft drink spill or a fall or some physical defect,I would advice to go and change it,but now i still can't figure it out though.
When you drive it,I'm assuming you used driver pack, did it show keyboard or touchpad under missing driver? If it did and still didn't solve the issue it means,the driver is missing but the right one for your PC is not available in the pack.
You should google the driver with your PC name and model,and download it.
Or just check the device driver on your PC if you will notice any yellow icon if you do, click on it and select update.
Wish you the best Op.

Greatzeus:
You are lucky op,know why? I think its a software issue,since the issue started after an update,assuming it was as a result of soft drink spill or a fall or some physical defect,I would advice to go and change it,but now i still can't figure it out though.
When you drive it,I'm assuming you used driver pack, did it show keyboard or touchpad under missing driver? If it did and still didn't solve the issue it means,the driver is missing but the right one for your PC is not available in the pack.
You should google the driver with your PC name and model,and download it.
Or just check the device driver on your PC if you will notice any yellow icon if you do, click on it and select update.
Wish you the best Op.

Thanks for your reply brother. I have used driver packs (drivers pack 13 & 15) to no avail moreover in the device manager I checked it and saw that "PCI something.... Controller "is showing a yellow button. So,which driver do I Google out now"is it keyboard or touchpad "pls?.Yeah, the drivers pack is showing a missing driver(touchpad ) and when derived it won't have any effect. Thanks so much for your time.

Diebyfire05:
Thanks for your reply brother. I have used driver packs (drivers pack 13 & 15) to no avail moreover in the device manager I checked it and saw that "PCI something.... Controller "is showing a yellow button. So,which driver do I Google out now"is it keyboard or touchpad "pls?.Yeah, the drivers pack is showing a missing driver(touchpad ) and when derived it won't have any effect. Thanks so much for your time.

Google the driver showing the yellow icon,if it wasn't there before the update.Make sure you specify your PC correctly when searching so that you will directed correctly to the right driver eg PCI controller driver for HP 15

Thanks and sorry for the delayed response. I'll do that now and I shall get back to you meanwhile external keyboard is working perfectly on my system but let me install that particular driver first before having a second thought. Thanks .