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I run Windows 8.1 on my PC and my work laptop. Yesterday I had 2 bluescreens on my laptop (never had them before on that machine) and today I had like 5 bluescreens on my PC.

All the bluescreens on the PC and 1/2 on the laptop were BAD_POOL_HEADER errors. They happened in completely random moments: browsing the web, watching movies, using Hyper-V.

The things that are in common between the 2 computers:

  • the same OS - Windows 8.1 x64
  • up to date system (maybe its something about Patch Tuesday updates?)
  • they both run Hyper-V
  • there are some common applications like Opera, SQL Server and a few others (most of the applications are different on both computers)

I looked through logs and they say that there was a reboot after error checking and the information was dumped to C:\Windows\MEMORY.DMP I can't see such a file even though I turned off hiding hidden files and hiding protected OS files.

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  • Have you browsed Windows folder as administrator? Could you check whether there are some dumps in C:\Windows\Minidump ?
    – ge0rdi
    Mar 14, 2015 at 18:43
  • I always use the admin account. I didn't find any methods or browsing folders as administrator. There are a few files in Minidump but I cant read any valuable information from them.
    – BuahahaXD
    Mar 14, 2015 at 18:54
  • Were some of those minidumps created at time of BSODs? Could you upload them somewhere? Or at least post output from Windbg (ideally with symbols configured).
    – ge0rdi
    Mar 14, 2015 at 18:56
  • Yes, they are from the times of bluescreens. I'll upload them in a minute.
    – BuahahaXD
    Mar 14, 2015 at 18:57
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    The crash happened because vmswitch!RndisDevHostCleanupMessageOpContext function freed invalid memory. Vmswitch.sys is part of Hyper-V (Network Virtualization Service Provider). So there may be a bug in it. It's really hard to tell anything more (at least w/o full dump). Try to search Google for vmswitch+BSOD combination, maybe you'll find something that will help you.
    – ge0rdi
    Mar 14, 2015 at 19:18

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