Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: No USB at POST after BIOS update

31 Jul 2016   #1
RogerR

7 x64 Ultimate
 
 
No USB at POST after BIOS update

I updated the BIOS on a Gigabyte GA- MA790X (AMD socket) motherboard and my USB keyboard will no longer trigger BIOS access.

The system still boots correctly and the machine is very stable with no other issues. But it sucks having to keep a PS2 keyboard around in order to access the BIOS.

This doesn't make much sense to me, since the previous old BIOS accepted input from the same keyboard. Any ideas appreciated!


My System SpecsSystem Spec
.
31 Jul 2016   #2
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

What problem were you having to warrant a bios update?

Check Device Manager and see if you are having problems with USB 2.0 or 3.0 drivers.
My System SpecsSystem Spec
31 Jul 2016   #3
RogerR

7 x64 Ultimate
 
 

Quote   Quote: Originally Posted by Layback Bear View Post
What problem were you having to warrant a bios update?

Check Device Manager and see if you are having problems with USB 2.0 or 3.0 drivers.
I upgraded my CPU, and the BIOS update was necessary for the mobo to recognize it.

DevMgr does not indicate any USB issues. All the USB devices functional normally in Windows, just not before windows boots.
My System SpecsSystem Spec
.

31 Jul 2016   #4
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

I have never used a Gigabyte motherboard so I know little about the settings.
I suggest that your motherboard setting is where the problem is. (Bios)

Grab your motherboard manual and go through the settings.

Some one that uses Gigabyte motherboards would be more helpful.

Sorry about that. I will see if I can find someone. I went back to the ranch and requested help.
Hang in there.
My System SpecsSystem Spec
31 Jul 2016   #5
RogerR

7 x64 Ultimate
 
 

I have been through the BIOS. The typical reference is to "enable USB legacy devices" or something like that (which is set to enable). That's why it seems so odd. Mobo's have been recognizing USB at POST now for a looong time.
My System SpecsSystem Spec
31 Jul 2016   #6
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

Stupid question but have you tried switching off the legacy USB BIOS support and seeing if that makes a difference, I doubt it but ...
My System SpecsSystem Spec
31 Jul 2016   #7
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Not a stupid question. After updating bios any thing can happen.
Trying cost nothing.
My System SpecsSystem Spec
31 Jul 2016   #8
RogerR

7 x64 Ultimate
 
 

Quote   Quote: Originally Posted by Barman58 View Post
Stupid question but have you tried switching off the legacy USB BIOS support and seeing if that makes a difference, I doubt it but ...
Toggling the USB support had only the expected effect - no USB support in Windows.
My System SpecsSystem Spec
31 Jul 2016   #9
Ranger4

Windows 7 Home Premium 64 bit sp1
 
 

I have a GA-Z77-HD3 motherboard with an Intel CPU & according to my mobo manual Port 60/64 Emulation needs to Enabled for full legacy support for USB keyboards/mice in MS-DOS mode. The default setting is Disabled.

Try changing this & see if that helps.

Legacy USB Support also needs to be Enabled for USB keyboard/mice used in MS-DOS mode. The default setting is Enabled.
My System SpecsSystem Spec
31 Jul 2016   #10
RogerR

7 x64 Ultimate
 
 

One other thought. I'm running in IDE mode and I thought under the old BIOS I was running in AHCI mode.
My System SpecsSystem Spec
Reply

 No USB at POST after BIOS update




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Info Post - BIOS Update fixed USB 3.0 Problems on a Gigabyte MB
I have a Gigabyte Z77X UD5H motherboard and the USB 3.0 ports developed problems. The motherboard has 3 separate USB 3.0 connectors that can be used for front panel USB 3.0 ports. The front panel in my case (a Coolermaster) has two USB 3.0 ports. One port developed an intermittent - it would...
Hardware & Devices
odd post/bios screen, plus no keyboard detected @ post
i had recently built a new computer. after installing windows 7 everything was fine, except for during start-up it'd say 'no keyboard deteced'. which it wasn't detecting it because i couldnt acess bios during this. once i came to the windows log in screen, it was then reading the keyboard. a...
General Discussion
Problems with Nvidia gpu post BIOS system BIOS update.
Hello all, this is my first time posting here so please forgive any mistakes/oversights. I've just updated my Samsung laptop's system BIOS via their software update program, and my Nvidia GPU (GT 650m DDR3) no longer seems to work. The Nvidia control panel is still there, and it still gives me...
Graphic Cards
Just used @BIOS to update my BIOS, it failed at 50%
Now I don't want to shut down or restart my computer because I fear it won't boot up. This is awful. Is there anything I can do to restore my BIOS whilst my computer still works? :(
Drivers
Update BIOS
Sorry if this is in the wrong place........ I want to update my BIOS and i want to know how and what could it do to my computer specfically the speed and all. i think there is warnings for updating bios or something.. right? i have an acer aspire 1 netbook...and i want to also update all the...
PC Custom Builds and Overclocking
Windows Update INCLUDES Motherboard Drivers and BIOS Update on M2A-VM?
Hi Guys, I have a REAL newbie question. I’ve tried reading a bunch of tutorials, but they’re a little over my head. I think my question is pretty basic, but after a couple hours research, hopefully someone here would be kind enough to help. I have an M2A-VM motherboard and my system keeps...
Drivers


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 14:56.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App