MSC Q7-BT MSC_Q7-BT_User_Manual.pdf 104 / 113
12 Troubleshooting
Issue 1: USB 3.0 stick causes hang at boot time
Some USB 3.0 sticks/disks may cause BIOS hang at post code 0xB4, if XHCI mapping mode is not set to enabled.
Solution:
Please check for firmware update of the USB device. Alternatively the setting for XHCI mapping mode could be changed to
enabled in the BIOS setup.
Issue 2: USB stick recognized as floppy
Some USB sticks are recognized as floppies (show up as "A:" drive under DOS). If this is not wanted, there is a way to handle
such an USB stick as a fixed disk (int13h device 8xh).
Solution:
Check in BIOS setup under Advanced -> USB Configuration and at the bottom it should have a list of USB mass storage
devices. Here you can choose between Floppy, Forced Floppy, Hard Disk or CD ROM behavior of your USB stick.
Issue 3: SATA 6Gb/s
SATA 6Gb/s behavior is functional only with SATA 6Gb/s cable.
Solution:
Use SATA 6Gb/s cable
Issue 4: Powercycle at startup
If no RTC is used, System will perform a extra powercycle at startup because TXE is enabled as default. Disabling this option
in Bios setup will prevent the extra powercycle.
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