Asus Z10PE-D8-WS. Motherboard will not post, stopping at Q-Code B4.

embalse · 16 Apr 2017 at 07:11

Motherboard Asus Z10PE-D8-WS
Windows 10
Bios 3004

I can post but I have to try 3-4 times, because, usually it gets stuck at Code B4 and on a few occasions B2.

Any thoughts?

.

The Artfull Bodger · 16 Apr 2017 at 07:23

Codes are for:
B4 USB Hot plug. Take it you have removed all non essential usb devices - can cause failure to boot
B2 Legacy option rom initialisation. Try if you haven't resetting the bios and clear cmos

embalse · 16 Apr 2017 at 08:06

The Artfull Bodger said:
Codes are for:
B4 USB Hot plug. Take it you have removed all non essential usb devices - can cause failure to boot
B2 Legacy option rom initialisation. Try if you haven't resetting the bios and clear cmos

Thanks for the advice.
When you say resetting the bios do you mean downloading the bios again and replacing it? I have the latest bios.

.

The Artfull Bodger · 16 Apr 2017 at 08:14

Nope, have you got your manual, its available on asus website here if you havent:
https://www.asus.com/uk/Motherboards/Z10PED8_WS/HelpDesk_Manual/
Yours, you have to remove a battery and move a jumper temporarily to clear cmos - easier to see in manual, just download the pdf and search for 'cmos'.

embalse · 16 Apr 2017 at 08:25

The Artfull Bodger said:
Nope, have you got your manual, its available on asus website here if you havent:
https://www.asus.com/uk/Motherboards/Z10PED8_WS/HelpDesk_Manual/
Yours, you have to remove a battery and move a jumper temporarily to clear cmos - easier to see in manual, just download the pdf and search for 'cmos'.

Ok. Thought you were talking about something separate from clearing the CMOS.

.

The Artfull Bodger · 16 Apr 2017 at 08:26

Yeah my bad didn't word it very well now looking back shouldn't have been an and

embalse · 16 Apr 2017 at 08:43

Would this same error stop the system from booting to the bios. I find hitting the delete key does not allow me to enter the bios setup?

.

The Artfull Bodger · 16 Apr 2017 at 08:50

Have you cleared cmos and moved jumper back to its original position?

embalse · 16 Apr 2017 at 10:29

The Artfull Bodger said:
Have you cleared cmos and moved jumper back to its original position?

Yes I have cleared the bios.
Now the system posts as before with 1 bleep then gets stuck at code B2. Nothing on the monitor. Holding the delete key also does not allow me to enter the bios..

.

The Artfull Bodger · 16 Apr 2017 at 10:45

Give this a go, maybe something you haven't tried. There are a people a lot better than me at fault finding on here, hopefully someone else maybe able to help. I would start removing hardware, ram and trying 1 stick at a time, disconnecting hd e.t.c to see if you can find a culprit, found a guide here:
http://www.tomshardware.co.uk/forum...roblems?_ga=1.120146952.1287745533.1492323624
Just read it actually and its a pretty rubbish guide

embalse · 16 Apr 2017 at 10:48

The Artfull Bodger said:
Give this a go, maybe something you haven't tried. There are a people a lot better than me at fault finding on here, hopefully someone else maybe able to help. I would start removing hardware, ram, disconnecting hd e.t.c to see if you can find a culprit, found a guide here:
http://www.tomshardware.co.uk/forum...roblems?_ga=1.120146952.1287745533.1492323624

Thanks. Managed to get the screen on my Cintiq to display sequence. As you can see it stops at B2....

.

embalse · 20 Apr 2017 at 23:20

Well after some playing around it now boots ok, but for whatever reason, if I have an external USB attached to the front panel I/O it gets stuck. Same with the display.
If I boot with two on it gets stuck. The only workaround is to boot with one display then once in Windows turn on the other display.

.

embalse · 7 Jul 2017 at 07:29

I am re-activating this old post for anyone who might have this issue.

The issue was that the USB Configuration in the bios by default disabled the EHCI HAND-OFF. By setting this to ENABLED all the issues were resolved.

Problem solved