Deathadder v2 pro doesnt work wirelessly

It sounds like you've done some troubleshooting already. However, based on your description, it seems like there might be a hardware issue with your Razer DeathAdder V2 Pro wireless connection. Here are a few steps you can try to further diagnose and potentially resolve the problem:

1. Reset the Mouse: There might be a reset button on the mouse. Press it, and then try to pair the mouse with the dongle again.
2. Check Dongle Compatibility: Ensure that the dongle you obtained is compatible with the Razer DeathAdder V2 Pro. Some dongles are specific to certain models and won't work with others.
3. Battery Connection: Double-check that the battery is properly connected and seated in its compartment. Loose battery connections can sometimes cause power issues.
4. Update Firmware: If possible, check if there's a firmware update available for your mouse. Sometimes, updating the firmware can resolve connectivity issues.
5. Driver and Software: Make sure you have the latest Razer drivers and software installed on your computer. This can help with compatibility and proper functionality.
6. Contact Razer Support: If none of the above steps work, it's a good idea to contact Razer support. They might have more specific troubleshooting steps or suggest sending in the mouse for repair if it's still under warranty.
7. Professional Repair: If the mouse is not under warranty or if you're comfortable doing so, you might consider seeking the help of a professional electronics repair technician. They can diagnose and potentially fix hardware issues that are causing the wireless problem.

Remember that opening up the device and attempting repairs yourself could void any existing warranty, so be cautious if you decide to go down that route.