8 replies to this topic

[Skux]

I used the NT 6.x fast installer to install windows 7 ultimate 32-bit to an external hard drive. This all went fine, and it ran on my laptop fine (after I moved it to a USB 2.0 port rather than a USB 3.0 one).

 

Then, since I have 8GB RAM, I decided to re-install with the 64-bit version of Win7 ultimate. Then when I tried to boot from my laptop, I got BSOD 0x7B during boot. After much trial and error, I found out that I could boot it by changing the SATA mode to IDE. However I want to be able to leave my SATA mode on AHCI (for the other OS). So I tried many different methods (most only differing slightly) to change to AHCI. These methods mostly consisted of changing the msahci service to Start=0.

 

No matter what I do, I still get BSOD 0x7B when in AHCI mode. I have tried adding my device to CriticalDeviceDatabase, to no avail.

 

What could be causing this, and how do I fix it?

 

Note: I followed the exact same installation procedure for the 32 and 64 bit versions. It beats me as to why the 32-bit version worked.

Edited by Skux, 21 January 2014 - 07:36 AM.

[cdob]

Which Windows 7 release did you used? Gold or SP1?

Do not use a Windows 7 gold to install and add SP1 later.
Use a Windows 7 SP1 DVD to install.

Which hardware do you use?
Can be a timing issue too. Try Wait4UFD http://reboot.pro/to...-booting/page-6 Be aware, the amd64 driver is not signed.

[Skux]

Windows 7 SP1.

 

I am installing it on a Western Digital Elements 1042. PC Specs:

Intel i5 cpu. Intel HD 4000 graphics. 8GB RAM. Laptop is an HP ProBook 6570b.

 

I tried using WaitBt and Wait4UFD, neither fixed the problem.

 

Edit: If it helps, I think it worked with the 32-bit installation with AHCI when I plugged it into the USB 3.0 port by mistake. It booted once on USB 3.0, then subsequent boots failed until I switched it to a USB 2.0 port. I tried this with the 64-bit installation but it didn't work (wouldn't boot from USB 3.0 port at all).

Edited by Skux, 22 January 2014 - 06:34 AM.

[Skux]

SOLVED!!!!!

 

After editing my last post, what I typed made me think... (about USB 3.0). I decided I would try installing the USB 3.0 drivers, setting them to Start=0 Group=Boot Bus Extender and try using the USB 3.0 port in AHCI mode.

 

And BOOM! It worked. And now I can use the speedy USB 3.0 ports

 

Thank you cdob for your time.

[cdob]

And now I can use the speedy USB 3.0 ports

Congratulations.

I wonder:
Did adding USB 3.0 drivers solve the USB 2.0 error too?
Can you boot from USB 2.0 ports now?

[Skux]

No, adding USB 3.0 drivers did not fix the USB 2.0 error (Still BSODed).

 

I have another question - I am trying to do it on another computer now that has no option in the BIOS to change SATA mode... how do I go about fixing BSOD 0x7B for this? I have tried installing the AHCI driver for it (Intel 7 Series Chipset Family SATA AHCI driver), to no avail.

[cdob]

No, adding USB 3.0 drivers did not fix the USB 2.0 error (Still BSODed).

Thanks for report. Well you never know at USB boot.
 

I have another question - I am trying to do it on another computer now that has no option in the BIOS to change SATA mode... how do I go about fixing BSOD 0x7B for this? I have tried installing the AHCI driver for it (Intel 7 Series Chipset Family SATA AHCI driver), to no avail.

There should be no IDE/AHCI drive required at all.
The true issue is unknown at x64 still. Remids to timing or driver load order.
http://reboot.pro/to...-windows-7-sp1/

Which USB driver version do you use? Try KB2862330-v2 version too.
http://support.micro....com/kb/2862330
https://www.microsof...s.aspx?id=40541

[Skux]

Thank you so so so much cdob!!!!!

 

In that link, I used your batch script (the one which sets BootDriverFlags and PollBootPartitionTimeout), and it worked like a charm!!!

 

Once again, THANK YOU!

[Skux]

It also fixed the USB 2.0 error for the other computer.

 

Now I have another problem. Sometimes when I plug a flash drive in, the system BSODs with error code 0xF4.