Windows 7 Bluetooth Connectivity Issues on Dell Studio 15 After Windows 7 Upgrade

It seems like you're encountering an issue with Bluetooth connectivity on your girlfriend's Dell Studio 15 after upgrading to Windows 7. The problem you're describing, where the Bluetooth mouse stops connecting after the computer is powered down, could be related to driver compatibility or power management settings. To address this Bluetooth connectivity issue, here are some steps you can take to troubleshoot and potentially resolve the problem: 1. Update Bluetooth Drivers: - Ensure you have the latest Bluetooth drivers compatible with Windows 7 for the Dell Studio 15. You mentioned trying different versions; make sure you are installing drivers specifically designed for Windows 7. - Visit Dell's official website and download the correct Bluetooth drivers for your model. 2. Disable Power Management for Bluetooth: - Sometimes, power-saving settings can interfere with Bluetooth devices. Try disabling power management for the Bluetooth adapter in Device Manager: - Right-click on the Start button and select "Device Manager." - Locate the Bluetooth adapter under "Bluetooth" or "Network adapters." - Right-click on the Bluetooth adapter and select "Properties." - Go to the "Power Management" tab and uncheck the option that allows the computer to turn off this device to save power. - Apply the changes and restart the computer. 3. Reset Bluetooth Devices: - Remove the Bluetooth mouse from the list of paired devices on the computer. - Re-pair the mouse with the computer to establish a fresh connection. - Check if the connection remains stable after a restart. 4. Registry Cleanup: - As you mentioned removing information from the registry, be cautious when editing the registry. Make sure to back up the registry before making any changes. - Recheck the registry settings related to Bluetooth and ensure they are configured correctly. 5. Check BIOS Settings: - In some cases, BIOS settings related to power management can impact Bluetooth functionality. Check if there are any settings related to Bluetooth or USB power in the BIOS settings. 6. External Bluetooth Adapter: - If the issue persists, you could consider using an external USB Bluetooth adapter as an alternative solution. By following these steps, you should be able to troubleshoot the Bluetooth connectivity issue on the Dell Studio 15 running Windows 7. If the problem persists, further investigation might be necessary to identify any underlying hardware issues or conflicts.