"Dell is not testing or developing Windows 10 drivers for this product. If you choose to upgrade, some features, applications, and connected devices may not work as expected."

So that may be part of your problem...

Have you gone to Intel's download site and used their wizard to scan your hardware for the latest chipset and Intel graphics drivers?

WHEA-logger Windows 10 errors as soon as I turn my back on it

What do the error messages say?

Is the system going to sleep/hibernation when you get the errors? In that case, (1) try disabling sleep/hibernation; (2) try disabling PCI Express Link State Power Management; and (3) disable USB Hybrid Sleep, all settings in the currently selected Windows Power plan.  

Hi Ron,

Thanks for your reply. When the error occurs, it's always on restoring from suspend or hibernation. It displays the new BSOD with the cryptic message that something happened and that the computer will reboot. - 90% of the time it doesn't, and I need to hard-boot it. The Windows/System error log shows WHEA-logger errors at around the time I assume the problems occur - the log reports

"A fatal hardware error has occurred.

Reported by component: Processor Core

Error Source: Machine Check Exception

Error Type: Bus/Interconnect Error

Processor APIC ID: 2"

- with the core ID being different each time. As the PC has dual quad-core Xeons, there's plenty of scope! This is usually preceded by "The NetTcpActivator service depends on the NetTcpPortSharing service which failed to start because of the following error: " I've looked up this error and done everything that was suggested. You gave me some tips on disabling things selectively, but I can't find any of them in the Win 10 Power Plan.

Thanks again for your help,

Go to the Windows Power options screen. The currently active power plan should have a check or tick next to it.

Click the link to change settings. On the screen that opens, click the link for Advanced Options. All of the items I suggested should be in the list at left of that screen.

Error Type: Bus/Interconnect Error

That might happen because PCI Express Link State Power Management is enabled in the power plan.

And also look for the option to turn off the NIC (and/or WiFi) on that same list and disable those too. Be sure to save any changes, when exiting the power plan.

Now go into Device Manager and look for the NIC and WiFi entries. Open each and click their Power Management tab. Uncheck the box "Allow PC to turn off..." for both.

Reboot when all that's done and see if it helps...

Hi Ron,

I've tried everything now, and thoght it had worked, but no - back to the same DSODs randomly. I have seen someone posting that this particular motherboard - GU083 - while supporting dual X5365 Xeons, is not stable -  Is it that the case? I have the latest BIOS that Dell provide (A08) and Intel's own motherboards that use the 5000X chipset claim to support dual X5365s. I'm baffled, and just wonder if it's Dell's microcode that is causing the problem. Perhaps Dell might have a beta BIOS I could try?

Cheers,

Sorry that didn't solve the problem. Could still be an issue with Win 10, because Dell hasn't (and won't) test this system for compatibility with the latest OS.

If you didn't have these problems before upgrading to Win 10, your only fix may be to revert to the previous OS.

This system is pretty old, so unlikely Dell will ever release a newer version of BIOS. I don't work for Dell so I'm only speculating, but there hasn't been a new version since A08, which is at least 5 years old.

You might want to go to Intel's download site and use their wizard to look for a newer chipset for Win 10, though I have no idea if that will help...