Hi there. After Windows 95b corrupted, I decided to start from scratch. I reformatted the hard drive and installed windows and everything was fine but I have an exclamation mark next to my Yamaha sound card in device manager. It says code 15 but lists no conflicts in the box. I have a Cyrix P150+ with S3 trio 64 video card, Rockwell fax data modem. All worked fine before!!!