Windows 7 Crashed on Boot. What The Heck is This?


Recommended Posts

Windows 7 crashed on me on boot. This is the second time it does that. Last time was about 3 months ago. Has anyone experienced this?

Problem signature:

Problem Event Name: BlueScreen

OS Version: 6.1.7601.2.1.0.768.3

Locale ID: 1033

Additional information about the problem:

BCCode: 4e

BCP1: 0000000000000099

BCP2: 00000000003E5A73

BCP3: 0000000000000000

BCP4: 0000000000003A73

OS Version: 6_1_7601

Service Pack: 1_0

Product: 768_1

Files that help describe the problem:

C:\Windows\Minidump\010213-12807-01.dmp

C:\Users\Scorbing\AppData\Local\Temp\WER-20794-0.sysdata.xml

Read our privacy statement online:

http://go.microsoft.com/fwlink/?linkid=104288&clcid=0x0409

If the online privacy statement is not available, please read our privacy statement offline:

C:\Windows\system32\en-US\erofflps.txt

A "4e" bugcheck equals "PFN_LIST_CORRUPT". According to Microsoft:

Cause

This error is typically caused by a driver passing a bad memory descriptor list. For example, the driver might have called MmUnlockPages twice with the same list.

If a kernel debugger is available, examine the stack trace.

In my experience, this is usually the case - a driver has caused some sort of memory list issue in the way it's freeing memory pages, and causes the crash. Without at least a kernel memory dump file of the issue, however, you now know everything that can be gleaned from the crash.

A "4e" bugcheck equals "PFN_LIST_CORRUPT". According to Microsoft:

In my experience, this is usually the case - a driver has caused some sort of memory list issue in the way it's freeing memory pages, and causes the crash. Without at least a kernel memory dump file of the issue, however, you now know everything that can be gleaned from the crash.

Video driver perhaps?

Who knows? Usually something loaded in nonpaged pool, but honestly it could be any driver that is accessing memory. The video driver isn't necessarily the only kind of driver that can do that ;). I usually suspect storage drivers, but I've seen video drivers do it, ramdisk drivers, etc.

http://msdn.microsof...2(v=VS.85).aspx

Who knows? Usually something loaded in nonpaged pool, but honestly it could be any driver that is accessing memory. The video driver isn't necessarily the only kind of driver that can do that ;). I usually suspect storage drivers, but I've seen video drivers do it, ramdisk drivers, etc.

http://msdn.microsof...2(v=VS.85).aspx

Mmmmmm...I wonder if its Skydrive?

OK I left Memtest86+ running all night and although its still not done yet, it found 5 errors. Now my question:

How do I know which memory chip is bad? Does Memtest86+ tell you which one is bad? Anyone knows?

Well the tests are done. Here's the results. I guess I'm screwed. My question is though, which module is bad? How can I tell from this result which one is faulty?

I have two 8GB modules installed for a total of 16GB.

acsD4TSQ.jpg

OK I left Memtest86+ running all night and although its still not done yet, it found 5 errors. Now my question:

How do I know which memory chip is bad? Does Memtest86+ tell you which one is bad? Anyone knows?

Just remove the sticks one by one and retest until you figure out which one is is. Can be a bit tedious, but it's the best way to know for sure which one is faulty.

Edit: Just saw your recent post with the screenshot. Well, at least you have a 50/50 chance of pulling the right one first! Based on your image, I would try the 2nd populated RAM slot first. The slots will be numbered on the mobo.

I feel you, scorbing! I woke up on Christmas day to a desktop that just won't power on. If it wasn't the one with all of my movies/mp3's on it, I wouldn't really care too much, but now I have to save up for a new power supply. Sorry that had to happen though, bro!

Well the tests are done. Here's the results. I guess I'm screwed. My question is though, which module is bad? How can I tell from this result which one is faulty?

I have two 8GB modules installed for a total of 16GB.

You're not screwed. 8gb should easily get you by until you replace it. Take one module out at a time (place it in DIMM 1), run the test, if it passes, that's a good stick. To make sure the other really is bad, take out the good one and put in the bad. Your computer should go "beeeeeeeppp". Shut it down, put the good one in. Windows should start up fine now. :)

I feel you, scorbing! I woke up on Christmas day to a desktop that just won't power on. If it wasn't the one with all of my movies/mp3's on it, I wouldn't really care too much, but now I have to save up for a new power supply. Sorry that had to happen though, bro!

Are you sure the pins are on correctly? :)

A co-worker of mine saw the test results and he tells me that my memory timings are way off. Can you guys concur with that?

I have high speed Kingston gaming memory on that PC DD3 1333.

you might be screwed, with those memory addresses it looks like you have errors on the 1st card and errors on the 2nd card...

but do the single card test to be sure, just pull one, make sure the other remaining one is in the correct slow, reseat it just to be sure its in right... run the test again... if it fails swap them and repeat

you might be screwed, with those memory addresses it looks like you have errors on the 1st card and errors on the 2nd card...

Which is highly unlikely.

A co-worker of mine saw the test results and he tells me that my memory timings are way off. Can you guys concur with that?

I have high speed Kingston gaming memory on that PC DD3 1333.

If this is gaming memory the proper timing and speed should be written on the sticks.

Are you sure the pins are on correctly? :)

Yeah, I've taken it out and tested out a lower rated wattage power supply in place of it, and everything worked. In fact, it's been acting strange since July. See, in my area, we are prone to power outages....a few months back, one happened, and when I tried to power up the old beast, the power light would blink, then shut right off. To remedy, I'd unplug it for about 15 minutes, then plug it back in, which worked for quite a while...up until christmas morning, anyway...so I knew it was coming. This laptop blows that old thing out of the water spec wise anyway, so I'm in no major rush to get it fixed. It's an old P4 machine. If I could afford an upgrade, trust me, I would do that instead of pumping more money into such an ancient system, but it's all I've got desktop wise, and it does what I need it to do, runs 7 like a champ, streams video to my ps3, SOME...and I mean some gaming (It's got an ATI HD3650 512MB AGPx4 video card, lol), but mostly, I leave it on as sort of a NAS. Oh well.

It's kinda an odd pattern that the failures are showing. Have you tried blowing out the DIMM slots?

Good point, GreyWolf....could be some dust build up, perhaps? (I'd rather it be something simple like that than to see you have to fork over some hard earned cash to invest in new memory modules!)

A co-worker of mine saw the test results and he tells me that my memory timings are way off. Can you guys concur with that?

I have high speed Kingston gaming memory on that PC DD3 1333.

Maybe reset your bios to fail safe defaults and see if that fixes your timing issues?

Yeah, I've taken it out and tested out a lower rated wattage power supply in place of it, and everything worked. In fact, it's been acting strange since July. See, in my area, we are prone to power outages....a few months back, one happened, and when I tried to power up the old beast, the power light would blink, then shut right off. To remedy, I'd unplug it for about 15 minutes, then plug it back in, which worked for quite a while...up until christmas morning, anyway...so I knew it was coming. This laptop blows that old thing out of the water spec wise anyway, so I'm in no major rush to get it fixed. It's an old P4 machine. If I could afford an upgrade, trust me, I would do that instead of pumping more money into such an ancient system, but it's all I've got desktop wise, and it does what I need it to do, runs 7 like a champ, streams video to my ps3, SOME...and I mean some gaming (It's got an ATI HD3650 512MB AGPx4 video card, lol), but mostly, I leave it on as sort of a NAS. Oh well.

Oh, well that's too bad. You need to get a surge protector and a UPS for yourself. :p

Well I fixed the latency settings on the BIOS. I also deleted the partitions and re-installed Windows, but this time I installed Windows 8 Pro. So far, so good. Played BF3 for 2 hours and no blue screen of death. It is very weird.

I downloaded a utility that reads the blue screen errors and translates then into an understandable format and apparently the Windows 7 kernel was failing plus a bunch of other stuff. Maybe I caught a virus? I don't know.

Well I fixed the latency settings on the BIOS. I also deleted the partitions and re-installed Windows, but this time I installed Windows 8 Pro. So far, so good. Played BF3 for 2 hours and no blue screen of death. It is very weird.

I downloaded a utility that reads the blue screen errors and translates then into an understandable format and apparently the Windows 7 kernel was failing plus a bunch of other stuff. Maybe I caught a virus? I don't know.

You had memory that was faulting, you proved this, why would you think you had a virus? Have you ran memtest since you fixed the timings?

This topic is now closed to further replies.
  • Posts

    • You've tried DuckDuckGo and Brave Search, now get serious with SearXNG by Paul Hill Over the last decade, it has become quite trendy to dump Google Search in favor of privacy-preserving alternatives such as DuckDuckGo, Startpage, and Brave Search. These search engines have done a very good job at highlighting dodgy practices by Google, such as adjusting search results based on what it thinks you’ll like (filter bubble) and stalking you around the web to advertise to you. While these search engines are good starting points when compared to non-private services like Google, there are still quite a few issues with them. For example, both DuckDuckGo and Brave Search require running non-free JavaScript in your web browser, which is comparable to running proprietary software on your computer, meaning you can be sure about what it’s actually doing in the background. Another issue is that these search engines are hosted on the respective companies’ servers, and you are using a service that you don’t control. Finally, DuckDuckGo, while offering privacy features, relies heavily on Microsoft’s infrastructure for its results and, in the past, has permitted Microsoft tracking scripts. If you are looking for a more private search solution than DuckDuckGo, Brave Search, and Startpage, then I recommend taking a look at SearXNG. It is a privacy-respecting metasearch engine that can be used via different public instances, which is useful for mobile users, or you can install it on your computer or server and run it locally with maximum control. Unlike Google, Bing, or Brave Search, which crawl the web and have their own search indexes, SearXNG is a metasearch engine, meaning it taps other search engines, stripping your identifying data, such as IP address, user agent, and cookies, in the process. Your search query is sent to the other search engines you enable before aggregating the results. SearXNG has deployment flexibility. If you are a casual user or a mobile user and don’t want to run SearXNG locally, you can use a public instance that is hosted by someone else. The main problem with this is that you are putting trust in the maintainer of the instance regarding stuff like logs that they may keep; good hosts should have a privacy policy explaining their policies. If you are trying to use SearXNG, you can also install the software on your device and then head to 127.0.0.1:8080 in your browser and search from there. While you don’t have to worry about a third-party admin like the public instances, search engines could ultimately block your IP address if they frown on you pulling in their search results locally. If you want to run it locally, it’s a good idea to use proxies or VPNs to hide your actual IP. You don’t have to worry about this with a public instance, as search engines never see your IP address. The main privacy benefit of using SearXNG is that it isolates your identity from the underlying engines that it’s capable of searching, such as Google and Bing. These search engines will only see requests coming from a generic server, so they can’t profile you and create a bubble filter that influences what results you see. This also ensures that your search engine doesn’t turn into an echo chamber that prevents you from reading alternative points of view. As a free software project, you are allowed to inspect SearXNG to make sure there are no negative features bundled inside. This sets it apart from the privacy search engines mentioned earlier because you can’t check their source code. As a meta search engine, you are not restricted to getting results from one source. Due to the fact that it scrapes content from other websites, your SearXNG instance will periodically get blocked from different providers, so it’s good to select a range of sources as a backup. While enabling all of the services will give you great results, this can make searching slower. I am personally happy with slower searches for the best results, but you can always check which providers are slowing down your search from the search results page and disable them to speed things up. If you want decent results quickly, enable the main search providers such as Google, Brave, DuckDuckGo, Qwant, Bing, and Yahoo. This way, you get wide coverage without the latency. On the Engines tab in Preferences, do note that there are different tabs, such as General, Images, and Videos, with their own providers that can be toggled and are not covered by "Enable all" while on the General tab, so be sure to dig into each. Just a note, if you want to enable everything, press "Enable all" in one tab, then hit save at the bottom of the page, then do the next tab, and so on. If you press "Enable all", then do that in each tab, and then save, nothing will stick. When I had just some of the search engines enabled, I searched “define nefarious” and results came back with the definition of “define” - obviously that was a sucky result. However, when I had everything enabled, it found dictionary pages for the word “nefarious” and even had an inline definition on the sidebar, which is quite nice too - that was delivered by WolframAlpha for anyone wondering! Probably the worst thing about this meta search engine is that the engines you select are saved with a cookie, so you must enable them on every new device you use SearXNG on, including if you decide to go into incognito mode with your web browser. Honestly, I would say this is the most annoying aspect, and perhaps if your browser lets you choose a separate private browsing search engine, then it would be best to use DuckDuckGo for this portion of your browsing. Another weakness of SearXNG is the random blocking of it by search providers. When you are on the results page, expand the “Response time” box, and it will show things like “Suspended: too many requests” or “access denied”. This is why it is good to enable several providers so that there is always a fallback to get results from. I won’t pretend SearXNG will be for everyone, however, if you enable all of the providers and put up with the slower response time, the results can be really amazing. Even if you don’t want to use it as your daily driver, keeping a bookmark handy that links to it is a good idea if you ever feel like doing a deep dive into a niche topic where other search engines are just failing to bring up any good result, due to the amount of sources it looks on. If you’re interested in radical user control over the software you use, installing SearXNG locally can also be a good idea, but be prepared to be temporarily blocked from sites if you trigger bot sensors without a VPN. Personally, I’ve opted to use a public instance, rather than install it myself. If you want to use it via a public instance, head over to searx.space to find a provider. Let us know in the comments if you have used SearXNG or its predecessor, Searx. What do you think about the quality of the results?
    • Dear Neowin, If it is not too much trouble, can you start using the new-ish designations for Insider Preview? "Experimental" is different than "former Dev" as it can apply to different models, eg 26H1 or 26H2 etc, right? No need to seed confusion IMHO. And, please "finally" update your graphics. OK?
    • Did you see their FAQ, its quite good. Have a look in the Advanced section. https://delta.chat/en/help
    • Just install Linux Mint that is a real blessing and many times cheaper because you can continue using your old Windows computer/laptop with the latest Linux updates.
    • Interesting share -- however it does not make sense: Email messages get stored somewhere, so how is Delta Chat "based on email" and decentralized without actually storing anything? By Web3 standard practices, the various Relays would require dedicated storage to make messages available to the recipients (like a large series of message queue channels, akin to racks of traditional post office boxes)... and Contacts must be two-way confirmed in order for encryption keys to be exchanged (ostensibly every key-pair is uniquely bound between sender and recipient) and the Relays would preserve the public keys in order to facilitate message carriage... or every device stores all sorts of keys and contact info. All of this to say, decentralized messaging is like running Bluesky nodes except instead of discovering/browsing public feeds by various posters (at the given node) these Delta Chats would be relaying encrypted messages (via Relays) that only trusted recipients would have the appropriate decryption key (their own private key) to read it. But this doesn't solve the "it's like email" sales pitch. The only way it's like email is that there's encrypted binary stuff being transported from your app into the federated ether of Delta Chat Relays for others to decrypt (hopefully only the intended recipient)... but outside of this federated relays framework, it is absolutely nothing like email.
  • Popular Contributors

    1. 1
      +primortal
      503
    2. 2
      +Edouard
      226
    3. 3
      PsYcHoKiLLa
      158
    4. 4
      Steven P.
      75
    5. 5
      FloatingFatMan
      71
  • Tell a friend

    Love Neowin? Tell a friend!