Skip to main content

Core i7 failure

Well, there's a first time for everything.  Actually had a CPU go bad on me.  Thought it was mobo for quite some time, didn't even consider CPU failure as an option.  Thank the Lord I had the spare lab box with another Core i7.  Little upgrade I guess...i7-920 to -950.  However, the CPU has a code that indicates 2008 manufacture, so might be out of warranty.

I'll be calling Intel tomorrow, so praying it'll be covered.  If not...no cheap to replace!

For anyone interested, the symptoms of the failed CPU are just this: System will no longer post, or show any video.  For all appearances it looks like a dead motherboard, or perhaps dead PSU.


update: Ah, was purchased in July 2009, so should be okay.

Constructive update:

Decided to post my troubleshooting process just in case someone isn't sure:
  1. System BSOD'd.
  2. I noted the BSOD error and codes via photograph, just in case they would help.  No drivers were mentioned in the BSOD, so chances are it's hardware.
  3. Once the memory dump completed (12GB of RAM takes a bit to dump), I reset the computer using the reset button.
  4. The PC would no longer boot - no video; monitors went into powersave, but still indicated they were connected.
  5. Immediately guessed motherboard was the issue, proceeded to colour my investigation with that assumption.
  6. Disconnected power and removed the SAS card, tried booting again.  Same symptoms.
  7. Disconnected power and removed all PCI cards (NIC, GPU, SAS), tried booting again.  Same symptoms.
  8. Got frustrated.
  9. Disconnected power and removed all RAM sticks, SATA cables, changed out GPU for a known good GPU, tried booting again.  Same symptoms.
  10. Disconnected power and removed motherboard/CPU/HSF from case, attached to another power supply from another system (PSU known good), tried booting again. Same symptoms.
  11. Srsly.  What.
  12. ...
  13. Ok, maybe CPU is bad.  Hahaha, silly notion.
  14. Took 'spare' CPU from lab server and swapped it out, installed Intel OEM cooler for ease of use, tried booting using the known good PSU.  System boots.
  15. So a different CPU on the same motherboard allows me to boot.  Therefore, the CPU is preventing the computer from booting (POSTing).
  16. Contact Intel for warranty replacement.  (which was handled like a consummate professional should - you go Intel)
  17. It arrives the next day.  Send bad one back to complete warranty.
  18. Put replacement 920 into lab server because the 950 is prettier in my PC anyways.

Comments

  1. I had this happen a few years ago as well. Same symptoms, and I never would have guessed it was the CPU until I replaced the mainboard and the problem was still there :)

    ReplyDelete
  2. Haha, yeah, wow...I was floored when I came to that realization.

    In related news, Intel's support chat guy was awesome. They have two options for warranty, once you get done with the preliminaries. One, you send it back and they send you a replacement. Since I don't have any CPU shipping stuff (and I'm particular about that kind of thing) I opted for option 2: They send me a replacement CPU with shipping label and I send it back.

    Very pleased with Intel's warranty, will continue my habit of purchasing Intel CPUs in future.

    ReplyDelete

Post a Comment

Popular posts from this blog

DFSR - eventid 4312 - replication just won't work

This warning isn't documented that well on the googles, so here's some google fodder:


You are trying to set up replication for a DFS folder (no existing replication)Source server is 2008R2, 'branch office' server is 2012R2 (I'm moving all our infra to 2012R2)You have no issues getting replication configuredYou see the DFSR folders get created on the other end, but nothing stagesFinally you get EventID 4312:
The DFS Replication service failed to get folder information when walking the file system on a journal wrap or loss recovery due to repeated sharing violations encountered on a folder. The service cannot replicate the folder and files in that folder until the sharing violation is resolved.  Additional Information:  Folder: F:\Users$\user.name\Desktop\Random Folder Name\  Replicated Folder Root: F:\Users$  File ID: {00000000-0000-0000-0000-000000000000}-v0  Replicated Folder Name: Users  Replicated Folder ID: 33F0449D-5E67-4DA1-99AC-681B5BACC7E5  Replication Group…

Fixing duplicate SPNs (service principal name)

This is a pretty handy thing to know:

SPNs are used when a specific service/daemon uses Kerberos to authenticate against AD. They map a specific service, port, and object together with this convention: class/host:port/name

If you use a computer object to auth (such as local service):
MSSQLSVC/tor-sql-01.domain.local:1433

If you use a user object to auth (such as a service account, or admin account):
MSSQLSVC/username:1433

Why do we care about duplicate SPNs? If you have two entries trying to auth using the same Kerberos ticket (I think that's right...), they will conflict, and cause errors and service failures.

To check for duplicate SPNs:
The command "setspn.exe -X

C:\Windows\system32>setspn -X
Processing entry 7
MSSQLSvc/server1.company.local:1433 is registered on these accounts:
CN=SERVER1,OU=servers,OU=resources,DC=company,DC=local
CN=SQL Admin,OU=service accounts,OU=resources,DC=company,DC=local

found 1 groups of duplicate SPNs. (truncated/sanitized)

Note that y…

Logstash to Nagios - alerting based on Windows Event ID

This took way longer than it should have to get going...so here's a config and brain dump...

Why?
You want to have a central place to analyze Windows Event/IIS/local application logs, alert off specific events, alert off specific situations.  You don't have the budget for a boxed solution.  You want pretty graphs.  You don't particularly care about individual server states.  (see rationale below - although you certainly have all the tools here to care, I haven't provided that configuration)

How?
ELK stack, OMD, NXlog agent, and Rsyslog.  The premise here is as follows:

Event generated on server into EventLogNXlog ships to Logstash inputLogstash filter adds fields and tags to specified eventsLogstash output sends to a passive Nagios service via the Nagios NSCA outputThe passive service on Nagios (Check_MK c/o OMD) does its thing w. alerting
OMD
Open Monitoring Distribution, but the real point here is Check_MK (IIRC Icinga uses this...).  It makes Nagios easy to use and main…