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Windows 7: BSOD when running laptop off battery power

21 Jul 2012   #21

Windows 7 Home Premium 64 Bit

The most recent crash indicates faulty or incompatible RAM as the most likely problem.
  • If you are overclocking any hardware, please stop.

  • Run the boot version of Memtest86+ paying close attention to Parts 2 and 3 of the tutorial. Also, in case Memtest86+ misses anything and comes up with no errors, run the extended version of the Windows Memory Diagnostics Tool for at least five passes. These you may want to run overnight since they take a long time to complete (run them an hour before bed each of the next two nights and check before going to sleep that they are still running).
    warning   Warning
    Before you proceed with the following, answer these two questions: Are you still under warranty? Does your warranty allow you to open up the machine to check hardware? If you are unsure of the answers to these questions, contact your system manufacturer. WARNING: The steps that follow can void your warranty!!!

    For Part 3: If You Have Errors: If you swap any memory components, follow these steps for ESD safety:
    1. Shut down and turn off your computer.
    2. Unplug all power supplies to the computer (AC Power then battery for laptops, AC power for desktops)
    3. Hold down the power button for 30 seconds to close the circuit and ensure all power drains from components.
    4. Make sure you are grounded by using proper grounding techniques, i.e. work on an anti-static workbench, anti-static desk, or an anti-static pad. Hold something metallic while touching it to the anti-static surface, or use an anti-static wristband to attach to the anti-static material while working. If you do not have an anti-static workbench, desk, or pad, you can use your computer tower/case by finding a metal hold in it, such as a drive bay.
    Once these steps have been followed, it is safe to remove and replace components within your computer.

  • We should check your RAM compatibility:
    Download and install CPU-Z and Upload screenshots of the CPU, Mainboard, Memory, and SPD tabs. In the SPD tab, upload an image of each slot.

My System SpecsSystem Spec
21 Jul 2012   #22
Reverend Truth

Windows 7 Home Premium 64-bit

I ran memtest86+ a couple of months ago and had no errors so I'll go staright to the windows memory diagnostics tool. In the meantime here are the CPU-Z screenshots.
My System SpecsSystem Spec
21 Jul 2012   #23

Windows 7 Home Premium 64 Bit

We need screenshots of both of your slots under the SPD tab.

You may also want to run Memtest86+ again. Sometimes it takes more than one set of 7-10 passes to find errors.

Further reading: Finicky RAM.

Quote   Quote: Originally Posted by CaptainDju View Post
Okay, finally got the new identical RAM kit delivered, and had time to run some tests, I think the conclusion is indeed a faulty RAM kit:

First I ran a positive control test where I reset the BIOS settings to Auto for all items I had changed in a previous post, and re-installed the faulty RAM in the A2-B2 slots
--> Crashes as frequent as before, as expected

Then I placed the faulty RAM in the A1-B1 to see if it could be a faulty slot (mobo) issue instead
--> Crashes as frequent as before, consistent with the faulty RAM theory, but does not rule out the faulty mobo

Third step was to remove the faulty RAM and install the new RAM kit in slots A1-B1
--> Not a single crash in a total of 10 hours of gaming, where I used to have crashes every few minutes. Still consistent with the faulty RAM theory, but does not rule out the faulty mobo

Last step was to move the new RAM to the A2-B2 slots to test them:
--> Not a single crash in over 18 hours of gaming/intensive use.

So in conclusion I think it is safe to assume the mobo is fine and the old RAM kit is faulty, so I'll send it out for replacement.

Here are my lessons learned on this one:

- Even though everyone hopes for a quick fix, ALWAYS perform test steps one by one (e.g. remove ONE supposedly faulty component and test right away). If you change multiple things and the issue is resolved, you won't know for sure what actually solved the issue.

- MemTest results are definitely not 100% accurate unless you leave it to run long enough. I think it's pretty safe to say that running it for less than 10 passes is worthless.
Note that even with enough successful passes (20+ have been advised) it does not replace real-life situations a.k.a. whatever you usually do on your computer that makes it crash.

- If the component you're suspecting is plugged in the motherboard, don't rule out the possibility that the motherboard itself is faulty, ideally have a negative control test with another similar component that is known to work fine

- RAM issues are a pain to diagnose as you can easily have false negatives as I have had. Also there's nothing you can do with your computer without RAM

I'll mark this one as resolved, hopefully it can help other people.

Anyway, thanks a ton for your super fast follow up and very knowledgeable answers.

TL;DR: The RAM was borked in the end, tadaaa
My System SpecsSystem Spec

22 Jul 2012   #24
Reverend Truth

Windows 7 Home Premium 64-bit

No errors with 10 runs of the extended windows diagnostic tool.

I'll run memtest86+ tonight.
My System SpecsSystem Spec
23 Jul 2012   #25
Reverend Truth

Windows 7 Home Premium 64-bit

11 passes with memtest86+ revealed no errors.

While there may be an issue with the RAM, Corsair wouldn't replace it without a failure on memtest.
My System SpecsSystem Spec
23 Jul 2012   #26
Reverend Truth

Windows 7 Home Premium 64-bit

... and I just crashed again while on battery. I've attached the dump file.
My System SpecsSystem Spec
23 Jul 2012   #27
Reverend Truth

Windows 7 Home Premium 64-bit

The first part of the error code on both of the last crashes was "0x00000050".

I found this microsoft support article

As it references display drivers and gregrocker had previously instructed me to update my display driver from the Lenovo site, I wonder if I shouldn't be looking there. I'm not sure which driver I should have. Using the autodetect feature on the Lenovo support site gives me the attached choices. I thought I needed the next to the last one which is different than what windows update installed. If that's the one I want, how do I manually install it?
My System SpecsSystem Spec
23 Jul 2012   #28
Microsoft MVP


Determine with certainty the Display device using Hardware Identification then install the correct driver from the list. You may have an incorrect driver installed.

If this fails to solve the problem, try each driver for awhile which you have installed at Device Manager>Display>Update Driver>Browse>Let Me choose.
My System SpecsSystem Spec
23 Jul 2012   #29
Reverend Truth

Windows 7 Home Premium 64-bit

Using hardware id I'm able to identify it as an Intel Mobile Graphic but I'm just stuck on what to do with that information.

I've tried to install the next to last video driver listed on the lenovo support site but when I follow your instructions above that I used to install the network adapter driver, windows wants to reboot after deleting the driver and then installs a different driver which I've used windows update to install what I have now.

I've tried following the installation instructions in the read me file on the lenovo support site but I get a message saying that it may not have installed correctly and I still have the 8:15:10:2032 driver showing in device manager under my display adapter tab.

I'm probably being dense about this but I'm not a technical person.
My System SpecsSystem Spec
23 Jul 2012   #30

Microsoft Community Contributor Award Recipient

Windows 10, Home Clean Install

If I may reply. You have many dump reports, which give several conclusions and many drivers as the cause.
To me this may be a hardware problem. Check your hardware. If that is negative
Run a full anti virus scan and download and run a full scan with malwarebytes
If that leads nowhere. Post and we shall go with the driver verifier test.
Initial Hardware Diagnostics
My System SpecsSystem Spec

 BSOD when running laptop off battery power

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