Laptop Keyboard just stopped working

Last night my HP laptop was working just fine with zero issues. Today I turned it on and my keyboard didn't work and also saying that no battery was detected.

Now if I turn it on with a power cord attached I can remove the power cord and the laptop stays turned on, I can also shut the lid and the laptop will stay powered on. However if I use the shut down function or turn it off by the power switch it will not power back up without the power cord attached.

The keyboard just refuses to work none of the keys work. No fn key no alt key no ctrl key nothing. I can't turn wireless on or off using the F key, however the on-screen keyboard works fine, and so does a keyboard that is plugged in through usb.

I have checked the drivers which says it is working properly, I tried uninstalling it and reinstalling, which didn't fix it.

I Googled this problem and read that a bios update might fix this, I updated it and nothing as well as doing the usual virus and malware scans with the likes of malwarebytes and MSE.

Any help would be great thanks.

HP pavilion g7 series.

LamerJoe,

I am led to believe that BIOS is not the culprit here, I think you are receiving an internal power malfunction and it is disrupting the internal keyboard function. So, to see if this works, I would like you to unplug the power cable, remove the battery for around five-ten minutes, replace the battery, then plug the power cord in, and reboot the laptop and test the keyboard.

Please, re-post if you still have issues.

Hi, and thanks for the replay. However that option didn't work either.