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 ??
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
TerraTec Maestro32/96 MIDI-1 (GS-MIDI Synth)
Others
0
0000-00-00
780.54 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Kompatibilní s Crystal PnP Audio System MPU-401
Others
0
0000-00-00
76.24 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
30.54 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal WDM MPU-401 Compatible
0
0000-00-00
675.74 KB
2K, XP, 2K3, VISTA, WIN7/32bits
AW37 MPU-401
0
0000-00-00
1.45 MB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
4.12 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
13.3 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
2.77 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
Others
0
0000-00-00
68.75 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
335.29 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
599.36 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
612.99 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
511.25 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
8.71 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP audio-systeem MPU-401-compatibel
0
0000-00-00
1.88 MB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
SoundTrack 16 Plus MPU-401 Compatible
Others
0
0000-00-00
636 KB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
4.12 MB
2K, XP, 2K3, VISTA, WIN7/32bits
TerraTec Maestro32/96 MIDI-1 (GS-MIDI Synth)
Others
0
0000-00-00
854.82 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal WDM MPU-401 Compatible
0
0000-00-00
2.04 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
13.3 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
584.34 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
321.58 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Acer Magic S23 MPU-401 Compatible
0
0000-00-00
643.27 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal PnP Audio System MPU-401 Compatible
0
0000-00-00
490 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
Others
0
0000-00-00
417.09 KB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal Semiconductor MPU-401
0
0000-00-00
9.08 MB
2K, XP, 2K3, VISTA, WIN7/32bits
Crystal WDM MPU-401 Compatible
Others
0
0000-00-00
298.93 KB
2K, XP, 2K3, VISTA, WIN7, WIN8/32bits
AW37 Pro MPU-401
0
0000-00-00
314.5 KB
2K, XP, 2K3, VISTA, WIN7/32bits
TerraTec Maestro 32/96 MIDI-1 (GS-MIDI Synth)
Others
0
0000-00-00
1.4 MB
2K, XP, 2K3, VISTA, WIN7/32bits