Windows 7 Audio Issues on Lenovo T410: No Sound or Device Recognition in Windows 7

It seems like you've gone through various troubleshooting steps to address the issue of no sound coming from your Windows 7 Lenovo T410 laptop. Since you've already tried upgrading and downgrading drivers, along with attempting to disable and re-enable devices without success, there are a few more steps we can take to try and resolve the issue. Here are some additional troubleshooting steps you can try: 1. Check Audio Services: Ensure that Windows Audio services are running. You can do this by: - Pressing Windows key + R to open the Run dialog. - Type in services.msc and press Enter. - Locate Windows Audio service and ensure it is running. If not, right-click and select Start. 2. Hardware Check: - Make sure your headphones work on another device to confirm they are functional. - Check if the headphone jack on your laptop is clean and not clogged with dust or debris. 3. BIOS Check: - Sometimes, sound issues can be related to BIOS settings. You can check if there are any audio-related settings in the BIOS that may need adjustment. 4. System Restore: - Consider performing a System Restore to a point where the audio was working fine. This can help revert any system changes that might have caused the issue. 5. Windows Update: - Ensure your Windows 7 is up-to-date with all the latest updates. Sometimes, a system update can resolve hardware-related issues. If these steps do not resolve the issue, it might be a hardware problem with the audio components on your laptop. In such cases, you may need to consult a technician for further assistance. Let me know if you need more detailed instructions on any of these steps!