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  Topic : [Problem]m4a78 pro will not boot from usb New Topic
mabry
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From: United States
Posted:3/3/2009 10:20:00 AM # 1
hi everyone, i have a new m4a78 pro motherboard that will not boot into dos from a flash drive. here are the things ive tried so far:
updated to latest bios
tried different flash drives
i can boot into dos off these flash drives perfectly fine on my m2n-sli deluxe mobo but on my m4a78 pro it freezes/hangs at the bios title screen. any suggestions would be appreciated

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Von
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Posted:3/5/2009 7:54:00 PM # 2

Have you format the USB flash disk to be a bootable disk?

After that, when the PC is POSTing, press F8 to check if the USB flash disk is listed in the boot menu.
If not, what is the config you use?

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Ti Wun
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Posted:3/18/2009 11:41:00 PM # 3
I agree as well. I cannot boot from a SanDisk U3 Titanium flash drive which has Windows 7.

The same thumbdrive is able to boot from my other systems (a Fujitsu laptop and a Hewlett Packard PC).

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plastikman
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Posted:10/9/2009 2:22:00 AM # 4
I have the same issue with my M4A78 Pro.

I have the following SATA devices connected

2x Segate ST31000340AS 1x Segate ST3500630AS 1x WDC WD5000ABYS-01TNA0 1x LITEON iHAS224-06

Here is what I have found.

With no SATA HDD's connected and selecting USB as the boot device booting a USB HDD or USB key is successful.

If any Internal HDD (not CDROM) is connected and detected by the BIOS and a USB device is set as the bootable device the computer hangs at "Checking NVRAM"

If any Internal HDD (not CDROM) is connected and detected by the BIOS and a USB device is NOT set as the bootable device the computer boots successfully.

I hope ASUS will resolve this issue with a future BIOS update.


**Edit**

This will be my second time sending this board in for RMA...

ASUS_Support> I would have to say the you have something wrong with the board.
ME> I was hoping that the first time it was RMA'd it would have been fixed
ME> :/
ASUS_Support> The only thing that you can do is send it in for repair.
ME> ok
ASUS_Support> It will be a problem in the controller on the board.
ME> ok i will ship it back to ASUS

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jerswing
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Posted:11/23/2009 4:57:00 AM # 5

Quote:
Author: Von Posted: 3/5/2009 7:54:00 PM

Have you format the USB flash disk to be a bootable disk?

After that, when the PC is POSTing, press F8 to check if the USB flash disk is listed in the boot menu.
If not, what is the config you use?


Same problem here.

Yup, USB shows & is set as 1st boot device in BIOS - and confirmed at F8 boot selection.

USB drive hangs POST every single time at "Checking NVRAM".

Sure makes USB ... USELESS for using system/OS utilities like Bart-PE, as well as WORTHLESS for installing/repairing OS !!

DVD & CD-ROM drives are of no help, since both fail to find NTLDR on [attempted] boots using both with verified bootable Bart-PE and XP install disks!?!

ARGGGGH!  How about some help from Asus on this??

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l-fy
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Posted:1/14/2010 4:47:00 AM # 6
It will work if you disable the floppy disk support in BIOS.
Don't ask me why.

I also have a eeeBox which reported squashfs errors (I've tried to boot a Mandriva Linux live usb - home made)  and disabling the multicard support fixed the problem.

Asus BIOS's are weird.

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Gwend
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Posted:1/25/2010 5:09:00 AM # 7
I have similar problem.
My version of BIOS is 1501 and I can't install Windows 7 from USB.

Mr l-fy, could tell me what version of BIOS installed on your MB?
I disabled support floppy driver but trouble not solved :-(((

Updated: Wow! I solved my problem.
For booting from USB I really disabled Floppy disk support (Main Page -> like Floppy Legacy).
Also I disabled USB 2.0 support.
After that Win 7 installation started from USB.

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Kidiwizi
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Posted:1/25/2010 8:07:00 PM # 8
Hi all... I am having the same problem >.<
I had disabled the Floppy Legacy from Main Page, disable the USB 2.0, but still it does not bootup
The system either stuck at the green color screen with the big M4A78 PRO logo and the press DEL for setup... or it will hang with a black screen stating "Checking NVRAM"
I had boot my USB drive on my laptop, and confirm the USB is working well

Is there any other way to solve this?? T.T

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Gwend
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Posted:1/27/2010 3:20:00 AM # 9
Hello, Kidiwizi ^_^
I tested boot from USB again. It is working now.
One moment. Also I do not change boot priority.
I pressed F8 when system loading and selected my flash drive.
PS. Type of USB Mass Storage in BIOS for my flash is Auto. May be try change it...
Stupid BIOS >_<)
Good luck!

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semenov
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Posted:3/22/2010 4:05:00 PM # 10
I have exactly the same issue with M3A78-CM, using the latest BIOS from asus.com. Any luck in finding proper solution? The manual boot order override with F8 button works, but that's not a suitable solution for me. I'm building a home NAS server with this mobo and I need it to boot from a USB stick automatically.

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