HP Pavilion 15 Notebook PC keyboard malfunction

good afternoon,
I have a HP Pavilion 15 Notebook PC. As of (I think) yesterday, certain keys on my keyboard have stopped working like the six on both the number pad and number row, the five on the number row, the backslash (i think that's what it's called; right under the backspace), and the hyphen next to the +/=.
As far as I know nothing had been spilled on it and no sticky fingers have been touching it. No error messages have appeared. Is there a way to fix the problem without dismantling the entire keyboard? If not, how do I dismantle it?!
Thanks

Dear Customer,
Welcome and Thank you for posting your query on HP Support Forum
It looks like you are having issues with the Keyboard on your Notebook.
We will surely assist you with this.
Let’s start with a questions:
1. Was there any liquid split on the Notebook Keyboard
2. Is there any Dust settled on the Notebook Keyboard
3. Are there any Keys which are fallen off / Any Keys which are loose
Troubleshooting:
Step 01. Click on the Start Button and go to Control Panel
Step 02. Open the Device Manager and expand the Keyboard from the list
Step 03. Right click on Standard PS/2 Keyboard and click on Uninstall
Note: This driver will get installed again automatically on your Notebook
Step 04. Please turn OFF the Notebook
Step 05. Un-plug the Power/AC Adapter and also remove the Battery too
Step 06. Press and Hold the Power Button of the Notebook for a full minute
Step 07. Now let's re-insert the battery back in and plug back the Power/AC Adapter
Step 08. Start the Notebook and keep tapping F10 Key during the startup to access the BIOS
Step 09. Once you get to the BIOS, Please press F9 or F5 Key[Model specific] to load setup defaults for the BIOS
Step 10. Use the arrow keys to say "YES" and hit enter
Step 11. Now let's press Esc/Escape Key. Save Changes and Exit - Yes
Step 11. Now please wait till the Unit loads the Windows Operating system
If the issue still persists please check and verify if an External Keyboard works fine with your Notebook
Note: Please click on the below shown link to find more troubleshooting steps
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03738933&tmp_task=solveCategory&cc=us&dlc=en&lc...
Hope this helps, for any further queries reply to the post and feel free to join us again
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Thank You,
K N R K
Although I am an HP employee, I am speaking for myself and not for HP

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