Sometimes when I start up the computer, there is no sound card at all, can happen with certain BIOS after updating, even though it is on in the bios, can not even install the drivers for the lack of hardware in windows, im on the latest F7 from the website now, did just intall windows 8,1 and all drivers a secont time now and i workt for 2 days and now no sound card , flipt the CAP_SW to x6 and rebbotet and there was a sound card in windows after boot , didnt have these problem befor all the f7 beta bios tried all of them f7h and f7m workted fine