Some keys as ENTER, SPACE and BACKSPACE type characters

[JWillian]

Some keys as ENTER, SPACE and BACKSPACE are not working properly in my HP Pavilion dm4 1055br. When pressing one of these keys type two or three characters ( 😞 ENTER (lçj), SPACE (.;M), BACKSPACE (~h). This latter at the same time turn off the F11 key (sound). The light of wireless key (F12) does not turn on. When turn off the F12 key, all the keys mentioned work well.

[KNRK]

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.

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://support.hp.com/us-en/document/c03738933

You also need to download and install the BIOS driver first and then Chipset driver followed by Graphics driver from the HP Website
 
Note: Please follow this order only while installing the driver - BIOS, Chipset and then Graphics

Hope this helps, for any further queries reply to the post and feel free to join us again

 **Click the White Thumbs Up Button on the right to say Thanks**

Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Thank You,

K N R K

Although I am an HP employee, I am speaking for myself and not for HP

[JWillian]

Dear Professor KNRK

The issue still persists. Any external keyboard works fine with my notebook. The keys: arrow up and arrow down, also are not working properly. The arrow up key writes: opU and the arrow down key opens a window preferences of another software linked to the word processor (EndNote). In a spreadsheet, these keys move the cursor in diagonal direction (-45°). All keys work well in the BIOS display. It was restored my system to an earlier date and was restored the computer to its original factory condition by using the Recovery Manager of HP, and the problem persists.

Thanks for your support.

[KNRK]

According to the message you have recently posted I would like to confirm that this is a hardware issue and the whole keyboard assembly needs to be replaced. I strongly recommend you to Contact HP Technical Support over the Phone for further assistance to get your Notebook diagnosed and serviced by an authorized HP Certified Engineer

You can also Check your warranty Here to verify the warranty status

Hope this helps, for any further queries reply to the post and feel free to join us again

 **Click the White Thumbs Up Button on the right to say Thanks**

Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

Thank You,

K N R K

Although I am an HP employee, I am speaking for myself and not for HP