It seems like you're facing an issue with your Gateway GT5012 desktop PC running Windows 7, where it's not shutting down properly. Although you mentioned that this problem is commonly associated with M-Audio, even though your audio is Sigmatel, there could still be various reasons for this shutdown issue. Here are a few steps and workarounds you can try to resolve the shutdown problem on your Gateway GT5012 PC: 1. Check for Windows Updates: Ensure that your Windows 7 operating system is up to date. Sometimes, Microsoft releases updates that fix bugs and address system issues. 2. Update Drivers: Make sure all your device drivers, not just audio drivers, are up to date. Outdated drivers can sometimes cause shutdown problems...