The ONE setting I hadn't changed. Figures. I didn't think it applied to on board sound. Oh well. The only selection to set it to is "Off" on my system, which I selected. So next time I'm surfing for awhile, I'll check to see if it sleeps again. So far so good. If it does it again, I'll let you know. Thanks.
Perhaps you can answer another question. I purchased a USB HyperX Quadcast microphone. Ever since plugging it in to a USB port and having Windows install the driver, I've been getting an Event 219, Kernel-PnP cannot load the Driver/WudfRd error every time I boot the system as long as it's plugged in. Everything reports as working properly in the Device Manager, no yellow triangles, and the mic works just fine. Any ideas?