When I boot up my computer I get the message DMA error! Sound.sys not installed! Press any key to continue. If I press a key the system boots up fine, but my sound card doesn't work. This all started when I unplugged my speakers from the sound card sockets, for some reason this caused the keyboard and mouse to stop responding. I pressed reset and I've been getting this error message ever since. I can't find any conflicts (DMA or IRQ), and sound.sys IS in my config.sys file. What can I do to get my sound card (Sound Blaster Pro) working again?