Your driver is up to date - if you have a problem with your driver, you can try to re-install the old version as below .
Crystal WDM MPU-401 Compatible
Others
5.1.2535.0
2001-07-01
895.66 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 ??e
Others
0
1969-12-31
30.62 MB
2K, XP, 2K3, VISTA, WIN7, WIN8, WIN81, WIN10/32bits
Crystal PnP Audio System MPU-401 Compatible
Others
0
1969-12-31
494.52 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
Others
0
1969-12-31
478.66 KB
2K, XP, 2K3, VISTA, WIN7/32bits
????? ??????? Crystal PnP, ??????????? ? MPU-401
Others
0
1969-12-31
1.29 MB
2K, XP, 2K3, VISTA, WIN7, WIN8, WIN81, WIN10/32bits
Crystal PnP Audio System MPU-401 Compatible
Others
0
1969-12-31
668.03 KB
2K, XP, 2K3, VISTA, WIN7, WIN8, WIN81, WIN10/32bits
Crystal Semiconductor MPU-401
Others
0
1969-12-31
292.13 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
Others
0
1969-12-31
308.78 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
Others
0
0000-00-00
390.12 KB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
AW35 Pro PnP MPU-401 Compatible
0
0000-00-00
688.45 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
281.92 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Compatible MPU-401 systčme audio Plug-and-Play Crystal
Others
0
0000-00-00
76.24 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal WDM MPU-401 Compatible
0
0000-00-00
110.19 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
1.14 MB
2K, XP, 2K3, VISTA, WIN7/32bits
System dwięku Crystal PnP zgodny z MPU-401
Others
0
0000-00-00
68.75 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
3.16 MB
2K, XP, 2K3, VISTA, WIN7/32bits
AW35Pro WDM MPU-401 Compatible
0
0000-00-00
114.5 KB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
AW35/Pro PnP Audio System MPU-401 Compatible
0
0000-00-00
636.5 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
8.38 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
2.37 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
298.83 KB
2K, XP, 2K3, VISTA, WIN7/32bits
SoundTrack 16 Plus MPU-401 Compatible
Others
0
0000-00-00
637.03 KB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
AW35 Pro PnP MPU-401 Compatible
0
0000-00-00
1.23 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
430.75 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
272.52 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal WDM MPU-401 Compatible
0
0000-00-00
154.1 KB
2K, XP, 2K3, VISTA, WIN7/32bits
AW32 Pro PnP Audio System MPU-401 Compatible
0
0000-00-00
500.97 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
3.37 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
318.1 KB
2K, XP, 2K3, VISTA, WIN7/32bits
AW37 Pro PnP MPU-401 Compatible
0
0000-00-00
1.48 MB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
AW37 MPU-401
0
0000-00-00
314.5 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
510.51 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
486.25 KB
2K, XP, 2K3, VISTA, WIN7/32bits
AW35 Pro PnP MPU-401 Compatible
0
0000-00-00
689.93 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
495.99 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
591.63 KB
2K, XP, 2K3, VISTA, WIN7/32bits
AW32 Pro PnP Audio System MPU-401 Compatible
0
0000-00-00
501.07 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
277.28 KB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
400.23 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
26.63 MB
2K, XP, 2K3, VISTA, WIN7/32bits