Select Language:
If you’re using an HP 655 laptop running Windows 7 64-bit and have recently upgraded your BIOS from version F04 to F29, you might notice a common issue: after shutting down your laptop, the sound disappears, and the volume control shows S/PDIF instead of your usual speakers. The speakers also appear to be disconnected.
Many users have experienced this problem with BIOS version F29, and unfortunately, reinstalling Windows or updating drivers often doesn’t solve the problem. Usually, efforts to update or reinstall Realtek audio drivers don’t fix this issue either.
The good news is, there’s a simple workaround that can restore your sound. If you restart your device immediately after turning it on, the sound should reappear and work normally. Once you shut down again, the issue usually returns, so this method helps regain sound temporarily.
The most effective solution right now is to roll back your BIOS to an earlier version, like F23. To do this, visit HP’s official website and download the BIOS version F23 for your laptop model. Carefully follow the instructions to downgrade your BIOS, ensuring your laptop remains plugged in and minimally used during the process—interrupting or failing this process can cause issues.
Many users have found that downgrading to BIOS F23 resolves the sound problem permanently. HP has been notified, and this problem has been discussed in user forums, like on the official HP support page. Hopefully, a future BIOS update will address this problem, but in the meantime, downgrading the BIOS is the most reliable fix.
Remember to back up important data before making system changes, and if you’re not confident in doing this yourself, consider contacting a professional.
Add us on ChatGPT
Add us on Perplexity
