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Author Topic: Z77A-G43 "B4" error code - Logitech G500 Mouse  (Read 11676 times)

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komradefoxTopic starter

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Z77A-G43 "B4" error code - Logitech G500 Mouse
« on: 28-December-12, 03:14:02 »
Whenever I boot up or restart, the bios hangs at a "B4" error code. Some research shows that it's a USB error. Whenever I unplug the mouse, it starts fine. 

My BIOS version is 2.40

Any help would be appreciated.
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badboy2k

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« Reply #1 on: 28-December-12, 03:27:49 »
yes B4 is a USB hotplug error!

do you have the mouse plugged into USB 2.0 or 3.0 ports?

are you using front pannel usb or rear I/O ones for the mouse?
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komradefoxTopic starter

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« Reply #2 on: 28-December-12, 03:32:26 »
The mouse is plugged into a USB 2.0 slot (I haven't tried it in a 3.0 slot).

I am using the rear I/O ports. I have not tried using the front ports.

I have a Logitech G500 mouse
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badboy2k

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« Reply #3 on: 28-December-12, 03:34:00 »
have you got another mouse to try?

if not try it in a usb 3.0 port to see if it does the same!
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OS: Windows7 professional SP1 64bit (OEM)
Motherboard: MSI 790FX-GD70 (bios 1.17) AM3
Processor:AMD phenom IIx4 955 black edition 3.2GHz processor(Clock speed of 4GHz)
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komradefoxTopic starter

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« Reply #4 on: 28-December-12, 03:36:44 »
Yeah, i have a  "Microsoft Basic Optical Mouse v2.0" that is USB. I've tried that mouse and it works fine (using the same port)

I'll try the 3.0 slots now.
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xmad

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« Reply #5 on: 28-December-12, 03:37:22 »
Also several release notes in the full release and beta bios of gaming mouse / keyboard compatibility fixes.

http://www.msi.com/product/mb/Z77A-G43.html#/?div=BIOS

or

>>Beta BIOSes<<

>>Use the MSI HQ Forum USB flasher<<
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komradefoxTopic starter

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« Reply #6 on: 28-December-12, 03:41:51 »
Hmm, I see the release notes for fixing "gaming mice" but those improvements were made on Bios version 2.4 which is what i have.  I tried plugging into a USB 3.0 port and it booted without any error.

As long as it doesn't happen again, I'm fine with it.

Thanks for the suggestions!

Edit:  After some more testing (guessing), I plugged in my keyboard to the usb2.0 port that my mouse was plugged into, and plugged the mouse into the other usb2.0 slot where the keyboard was and it returned with no error. Not sure what specifically was happening.
« Last Edit: 28-December-12, 10:47:21 by komradefox »
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badboy2k

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« Reply #7 on: 28-December-12, 03:54:42 »
probably have 1 bad USB port then thats not liking your mouse and is causing this error! <--- see if that post has any visual differances to the other (dust or broken contacts or any other differances)!
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Motherboard: MSI 790FX-GD70 (bios 1.17) AM3
Processor:AMD phenom IIx4 955 black edition 3.2GHz processor(Clock speed of 4GHz)
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Extras: 1 x 4 port raid card (model SIL3114) ASUS Xonar Essence STX sound card PCI-E X1.

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« Reply #8 on: 02-October-15, 19:44:34 »
Anyone still getting this error, try disabling legacy USB support.
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flobelix

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« Reply #9 on: 03-October-15, 12:13:07 »
Em, yes but this thread is 3 years old. Please don't resurrect old topics.

:floblock:
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