Trying to diagnose MCE

[HCorb]

I am getting repeated lockups/reboots on a laptop. I'm seeing these MCE errors logged:

Hardware event. This is not a software error.

MCE 0

CPU 0 BANK 0

TIME 1444394565 Fri Oct 9 08:42:45 2015

MCG status:

MCi status:

Error overflow

Uncorrected error

Error enabled

Processor context corrupt

MCA: BUS Level-0 Local-CPU-originated-request Generic Memory-access Request-did-not-timeout Error

BQ_DCU_READ_TYPE BQ_ERR_HARD_TYPE BQ_ERR_HARD_TYPE

timeout BINIT (ROB timeout). No micro-instruction retired for some time

failure that caused IERR

STATUS f200084000000800 MCGSTATUS 0

MCGCAP 806 APICID 0 SOCKETID 0

CPUID Vendor Intel Family 6 Model 23

Hardware event. This is not a software error.

MCE 1

CPU 0 BANK 5

TIME 1444394565 Fri Oct 9 08:42:45 2015

MCG status:

MCi status:

Error overflow

Uncorrected error

Error enabled

Processor context corrupt

MCA: BUS Level-3 Generic Generic Other-transaction Request-did-not-timeout Error

BQ_DCU_READ_TYPE BQ_ERR_AERR2_TYPE BQ_ERR_AERR2_TYPE

received parity error on response transaction

MCE driven

STATUS f200001014000e0f MCGSTATUS 0

MCGCAP 806 APICID 0 SOCKETID 0

CPUID Vendor Intel Family 6 Model 23

Hardware event. This is not a software error.

MCE 2

CPU 1 BANK 5

TIME 1444394565 Fri Oct 9 08:42:45 2015

MCG status:

MCi status:

Error overflow

Uncorrected error

Error enabled

Processor context corrupt

MCA: BUS Level-3 Generic Generic Other-transaction Request-did-not-timeout Error

BQ_DCU_READ_TYPE BQ_ERR_HARD_TYPE BQ_ERR_HARD_TYPE

received parity error on response transaction

MCE driven MCE is observed

STATUS f200001030000e0f MCGSTATUS 0

MCGCAP 806 APICID 1 SOCKETID 0

CPUID Vendor Intel Family 6 Model 23

What hardware component is giving this error?

I have tried to update the system BIOS, which has not helped.

I have run memtest, which showed no errors.

Are there any utilities available to help troubleshoot/diagnose this issue?

The machine is a Dell Latitude D830 laptop.

It was running the A15 BIOS, but is showing the same behavior with the A17 BIOS.

I am currently running Ubuntu 14.04.3 LTS

I can boot it to Windows 7 for troubleshooting/diagnostics.

Thanks,

Harland

[HCorb]

Also, I'm not sure what part of the MCE log is important.

[Jose_H_Intel1]

You may want to take a look at the following resources:

• http://www.intel.com/support/processors/sb/CS-031726.htm Processors — What is the Intel® Processor Diagnostic Tool?
• https://en.wikipedia.org/wiki/Machine-check_exception Machine-check exception - Wikipedia, the free encyclopedia
• http://ubuntuforums.org/showthread.php?t=2252207 Ubuntu Forums

[HCorb]

I tried running the processor diagnostic tool, it reports everything is okay.

My laptop is still spontaneously locking up and rebooting.

[Jose_H_Intel1]

I would contact DELL* support if you have exhausted all other possibilities.