I never had a problem with this sound card until a few months ago. On cold start up, the card would make a buzzing noise and the red light on the card would flicker intensely. After about a minute or two, the card would stop buzzing and the light would stop flickering. I figured when the card warmed up everything straightened out. so I took the hair dryer and focused the hot air through the case holes. I did this for 30 seconds and then started the computer. The sound card started right up...no problems. Sometimes after being idle for hours, the card stops working. I reinstall the drivers and it works again. This was my build from years ago. I have an Asus P9X79 Pro MB, Intel 3930X Processor, 5.1 Altec Lansing Speakers, 32gb Corsair 2133 Memory and the latest bios for the MB. I am running Windows 10 Pro. Is there some little chip on the card that is having a problem? Blowing hot air to heat up the card works. Any help is appreciated.