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POST Issue: Dell Precision 690 (0MY171 REV A01 Board) - Downgraded to BIOS A01 from A08

Last response: in Motherboards
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July 1, 2013 6:10:07 PM

I've had a series of problems with this machine while upgrading this machine. Here's the history:

Upgrade:

-Installed 16GB (2GB x 8) of RAM (http://goo.gl/OoPak) to replace the stock 4GB.
-Installed Windows 7 Enterprise (x64)

Problem:

-BIOS recognized 2GB in each DIMM, but only said 8GB installed.
-Windows showed 16GB installed (8GB usable)

I shuffled the RAM around and removed the modules systematically to no avail. Still, the PC was running better than before, so I moved on with the upgrades thinking I'd circle back to this problem.

Upgrade:

- Installed a second Xeon 5160

Problem:

-BIOS and Windows only showed one CPU (CPU 0)

I did some searching and found that reverting back to BIOS A01 could help. I was on the most current (A08).

I flashed A01 from a bootable USB and the screen showed "Update Successful" before rebooting. When my PC tried to reboot, it could not POST. I am getting beep code "1-3-2" and front panel light code "1 and 3." This suggests that there is a memory module issue. I've tried reseating all of my modules and even reverting back to the original stock configuration. Nothing has been able to fix this error code. It seems unlikely the the board conveniently bit the dust right after a successful upgrade. Thoughts?
July 6, 2013 7:42:30 PM

I am following up to my previous post despite the lack of responses in case someone else experiences something similar in the future.

I believe my motherboard was faulty initially. This caused it to not notice the CPU in CPU1 and made it unable to utilize the full 16GB of RAM. However, this did not cause the POST issue.

My best guess is that when I "successfully flashed" the A01 BIOS over my 0MY171 board it fried an on-board memory module. This is why no amount of moving and reseating the RAM or CPUs could fix the issue. Perhaps, someone can verify the validity of this guess?

I have since bought a replacement 0MY171 (Rev 00) board on BIOS A08 ($60 for a server pull). The machine now boots and all RAM and CPUs are fully utilized!
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August 26, 2013 10:10:28 AM

ctasich said:
I am following up to my previous post despite the lack of responses in case someone else experiences something similar in the future.

I believe my motherboard was faulty initially. This caused it to not notice the CPU in CPU1 and made it unable to utilize the full 16GB of RAM. However, this did not cause the POST issue.

My best guess is that when I "successfully flashed" the A01 BIOS over my 0MY171 board it fried an on-board memory module. This is why no amount of moving and reseating the RAM or CPUs could fix the issue. Perhaps, someone can verify the validity of this guess?

I have since bought a replacement 0MY171 (Rev 00) board on BIOS A08 ($60 for a server pull). The machine now boots and all RAM and CPUs are fully utilized!


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Best solution

August 26, 2013 10:13:19 AM

I have the same board and had the same problem, it is not the board its the system, only win 7 64 ultimate and win 7 64 professional register the second chips, all the other os systems are designed for lower end use's, hope this helps because it took me weeks to suss out that
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December 13, 2013 10:21:39 AM

I have the same problem, BIOS recognises BOTH cpus (x5355s) on bios A08, and i have windows 7 ultimate 64 bit, but only 1 cpu shows up on windows? But when i try to revert back to a01, it doesn't let me?
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January 9, 2014 9:15:33 AM

ellard8 said:
I have the same problem, BIOS recognises BOTH cpus (x5355s) on bios A08, and i have windows 7 ultimate 64 bit, but only 1 cpu shows up on windows? But when i try to revert back to a01, it doesn't let me?


Was Win Ultimate a fresh install if so then I would check device manager to see if you mean that Dual CPUs does not show after doing an upgrading to Windows 7 Ultimate?

The Dual CPUs feature is supported in Windows 7 Professional Edition. Please open Device Manager and expand Processors. How many processor is listed in Device Manager?

If there is only one processor, please upgrade ""Chipset driver"" and then check the result again., look at my other posts for the correct drivers list, also, are you running a 32 or 64 bit system, "control panel - - system" to check, if its 32, it might not pick up the second I would imagine its not meant for dual cpu...

I know for a fact the home premium-> anytime upgrade -> to ultimate works, as would anytime upgrade from any win 7 OS, that's from experience, your best answer would be to upgrade your driver

if no joy there then just fresh install Ultimate
Hope this helps
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January 10, 2014 5:49:40 AM

I have windows 7 ultimate 64 bit, I have it working, all processors were showing up but now I downgraded to a01, to actually be able to use them using a usb flash drive
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January 15, 2014 4:05:45 PM

ellarddd said:
I have windows 7 ultimate 64 bit, I have it working, all processors were showing up but now I downgraded to a01, to actually be able to use them using a usb flash drive


I have the same op but have the a08, did you check what I said, I guess its of no matter now as long as you're happy with your system then fair play to you, as for me am currently in progress of adding sli to the my171, very tricky but it can be done, all I need after that is a pair of x5365's and another 48 gig of ram and i'll be ready for a larger project
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