Did I damage the onboard sound chip on my Z97 motherboard?
Did I damage the onboard sound chip on my Z97 motherboard?
I own an ASUS Z97 motherboard.
Lately I had to take out one of the back plates near the bottom of the case.
I forgot there was a shared USB device still connected, supplying power.
I accidentally removed the back plate, it touched the motherboard close to the bottom left, and my onboard sound stopped working. When I turn on the speakers, strange noises occur.
I have a PCIe sound card that is functioning properly.
It would be great if I could restore the motherboard to good condition.
Did I cause permanent damage?
It was turned off. However, as mentioned, I had neglected the USB cables that were still attached.
When examining, look for mechanical damage; simply touching anything won't cause electrical issues.
If your external USB device relied on an external brick, it could have been feeding 5V DC back into the USB port on your PC. When you say "switched off," do you mean flipping the mains switch on the back of the ATX power supply to the off position? Or did the PSU get unplugged from the wall outlet? If neither happened, the PSU would have been providing +5VSB power in standby mode, meaning the board remained active. Some boards have red or green LEDs indicating power presence. In either scenario (USB 5V feed or live +5VSB), damaging components could cause lasting harm. If only the audio codec was affected, the damage is minimal. Are you skilled with hot air rework tools and able to identify dead chips? Otherwise, consider hiring a professional—their cost may exceed the value of the board.
It seems I’ve managed to stay ahead of things, but there’s a more significant issue looming ahead. On my computers, I use Windows 10 on one drive and Ubuntu 24.04 on another, thanks to a switch made last year. This setup is secure because my Windows drive won’t be affected after October’s end-of-life. Ubuntu Cinnamon offers strong security and long-term updates, and the Pro version is free too. I had planned to share my USB printer and external hard drive between the two systems if needed. The audio problem reminded me that even though a device is assigned to one machine, current can still pass through to the other. This means a Windows virus or other issues could potentially reach my Ubuntu drive and end up on the Windows drive on the other side if I’m not careful. I’ll need to reconsider my configuration. In the meantime, I’ve turned off the built-in audio in the BIOS—fixing things myself isn’t an option. Thanks to everyone for the helpful advice.
I have several computers at my disposal, though I'm uncertain about the exact nature of "push button drives." This isn't crucial. I've experimented with Ubuntu, Red Hat and Zorin, but haven't settled on a choice by October 2025. This situation applies especially to those using Windows 10 Home or Professional. However, corporate and industrial clients running Windows 10 LTSC 2019, 2021 and Windows 10 IoT Enterprise LTSC 2021 benefit from extended support until 2029, 2027 and 2032 respectively. I utilize a USB switch to link multiple PCs to a single printer. I'm not certain about the benefits of using an external USB hard drive, but it's worth considering. My preference is to connect USB drives directly into a computer without any hubs or switches. I don't endorse the suitability of the USB switch, but it serves as a practical example. Two-way and four-way switches are widely used. I employ a 4-way USB switch with my Creative Labs DacMagic 100 to connect any one of four computers to the hifi audio amplifier. Using a USB switch helps prevent virus transmission between machines via +5V DC currents. If two PCs share a printer through this method, infection risk is minimal—unless the malware exploits USB data links (not power lines). The switch isolates data connections on each machine. Viruses typically spread through network links (Ethernet/WiFi), infected portable drives, or compromised USB sticks. Keeping an isolated PC with unsupported OS and no internet connection significantly reduces exposure. Portable drives and infected USB sticks become the main infection vectors. Ensure your anti-virus is current on any connected devices to minimize risk from infected drives. I still own a few systems running Windows 7 and XP, which remain offline and are relatively secure. An alternative approach is to "adopt the future" by installing a customized version of the official Windows 11 ISO on your Z97 using Rufus. Disable Secure Boot, TPM 2.0, outdated CPU features and 4GB RAM limits. This allows running 11 on older hardware. Resources for this method include: - https://rufus.ie/en/ - https://www.diskmfr.com/install-win11-on...-0-needed/ - https://www.wintips.org/create-a-windows...ith-rufus/ Consider testing with a new or spare SATA SSD, which is affordable (around $12 for 120GB) but lacks DRAM cache and may slow performance. If Windows 11 functions, you can clone the OS to a more appropriate drive. - https://www.amazon.com/Patriot-Burst-Eli...B08LKMQ9T4 - Adjust the Windows 11 interface to resemble Windows 10 if you prefer a familiar look. -
I attempted the Rufus method previously but didn't succeed.
Maybe I'll try again since I'd like to feel more protected against viruses.