System restore can't help: "Unknown bugcheck."


  1. Hunnicat
    Posts : 13
    Windows 7 Home Premium 64-bit
       New #1

    System restore can't help: "Unknown bugcheck."


    Hello.


    A few days ago my windows 7 wouldn't complete boot. I got a blue screen, which said something like "a vital execution thread suddenly stopped."

    Then windows ran System Restore, but it ended by saying it couldn't help!

    It said:

    "Unknown bugcheck.

    bugcheck f4

    0x3
    0xfffffa8005943b10
    0xfffffa8005943df0
    0xfffff800033c9d30"

    I have trying to read up online ever since, and my head feels like it's going to explode! I thought I could reinstall windows 7 over the old one, but from what I have read, it seems I can't, and I have to start with a fresh harddrive. So I was going to buy a new harddrive, and reinstall. But since this is going to be a humongous amount of work, I wanted to ask you guys, if there is some way I can avoid some of it.

    Is there a way I can get my system to work as it is? Or a way of reinstalling over it?

    I tried to use a System Restore Point, but it claimed there weren't any! I was sure I had made one some monthys ago.

    But the harddrive seems okay. I booted a small Linux which is called Tiny, and I could see all my files, and I tried opening some of them.

    I tried running chkdsk /f on my harddrive, but it didn't seem, to help any...

    Please help!
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  3. RolandJS
    Posts : 2,774
    Windows 7 Professional 64-bit
       New #2

    There is a way to install Windows 7 Professional and "below editions" on top of a current Windows installation; however, there are risks involved. Do you have current, restorable, backups of your Data folders and files or Data partition on external media?

    Windows Secrets Lounge - Forum: Win7's no-reformat, nondestructive reinstall
    Windows 7 forum: Repair Install - How to Do a Repair Install to Fix Windows 7; Brink; 02 Feb 2009
    You might want to read through/scan through both threads before embarking upon this project.
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  4. JoWazzoo
    Posts : 57
    Windows 7 Pro 64
       New #3

    Did you try the Restore point in Safe Mode? They can get screwed up in regular mode but be available and work in Safe Mode.

    Did you try a SFC /scannow?

    Bugchecks are really nasty.

    Interpreting a Bug Check Code | Microsoft Docs
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