What OS and SP's ? In all probability you forgot to change the fixed bandwidth setting in THBDA.inf BEFORE installing...
QUOTE
; Fixed bandwidth setting for DVB-T
; Normal - 0: As it is, no change
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x00,0x00,0x00,0x00;
Fixed as VHF 7MHz, UHF 8MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x01,0x00,0x00,0x00
; Fixed as 6 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x06,0x00,0x00,0x00
; Fixed as 7 MHz
HKR,"DriverData","FixedBandwidth",0x00010001, 0x07,0x00,0x00,0x00;
Fixed as 8 MHz
;HKR,"DriverData","FixedBandwidth",0x00010001, 0x08,0x00,0x00,0x00