MSI P43 won't boot with usb devices connected

My system:
MSI P43 Neo
Intel Core 2 Duo E8400
NorthQ Black Magic 850 watt PSU
Corsair 4 x 2GB ram PC2-8500 1066MHz
Seagate 320 GB hd
Hitachi 1 TB hd
Samsung 1.5 TB hd
Club3D Nvidia GTX275 1,75 GB
Samsung DVD Write Master
When i try to boot i freezes at the detecting usb devices when i have a usb device connected. It does with any usb device. But when i boot up without any usb devices connected then i boot fine and i can connect the devices right after the detection of usb devices. How can that be?

Googled on "computer not booting with usb code 6b38" and found this:
 Quote
****SLOW BOOT-UP in POST SCREEN****
P.S. If you see the BIOS code 6B38 in the bottom right corner of the screen, this is a indication that USB Legancy support is enabled in the BIOS. If this is enabled and you have any usb devices attached such as a external USB Hard drive, your system will take ages to go through the POST boot screens.
So disable this setting in the BIOS and the system will then boot in a matter of Seconds
From:
http://www.rebelshavenforum.com/sis-bin/ultimatebb.cgi?ubb=get_topic;f=30;t=000250
Also try and see if a clear CMOS will help, some people suggested that from a old post from MSI forum here, saying its bios 1.3 thats bugged.
So if disabling doesnt work, perhaps down/upgrading BIOS might.

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