Problems with wireless keyboard and mouse connection

[J_Mauritius]

Good afternoon.

I have an HP Pavilion Wave Desktop 600-a0xx and for a while now the wireless keyboard and mouse don't work well.
I opened its case, extracted the USB dongle and connected it to another PC and both the keyboard and mouse started working normally, which is why I noticed that the problem is not with the USB dongle.
Has anyone had the same problem?

I would be very grateful for any information that could help me solve the problem.

Thanks in advance.

[Echo_Lake · Accepted solution]

@J_Mauritius
Thank you for posting on HP Support Community.

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:  

Before troubleshooting startup issues, remove or disconnect all discs and devices from the computer.

• Step 1: Remove discs and devices
• Step 2: Perform a hard reset
• Step 3: Run hardware diagnostic tests
• Step 4: Refresh or reset your PC. Click here: https://support.hp.com/in-en/document/c04718479 to complete the troubleshooting steps. By end of the article, you will be able to fix the issue.

And also Perform Windows Update and HP Support Assistant: 

To check for updates now, select the Start button, and then go to Settings  > Update & security  > Windows Update, and select Check for updates.

Install updates from HP Support Assistant: Go to Download HP Support Assistant to install the tool.

1. To open the HP Support Assistant, double-click the HP Support Assistant icon .
2. Click My devices in the top menu, and then click Updates in the My PC.
3. Click Check for updates and messages to scan for new updates.
4. Review the list of updates. Updates with a yellow information icon are recommended. Updates with a blue information icon are optional.
5. Click the update name for a description, version number, and file size.
6. Select the box next to any updates you want to install, and then click Download and install.

And, also run BIOS Update: Follow steps from the link: https://support.hp.com/in-en/document/c00042629
HP PCs - Wireless Keyboard and Mouse Connection Issues: https://support.hp.com/in-en/document/c00006821

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.