T thermalfake Member Joined Jul 29, 2012 Posts 5 Nov 19, 2012 #1 Hi My friend ask me to help him resolve a problem with constantly occuring a bsod. Its a 0x3b error with probably faulty U24DRV.sys He is using external sound card USB Esi UX24 on his Lenovo Ideapad Y580. He mentioned all system updates are up to date. If something is missing I will provide it soon. Minidump is here http://www.sendspace.com/file/nv8k86 Thanks.