Forum Thread

BSOD ... corrupt MBR or BCD ... help!

Ram|bunc|tious 24,564 1,944 May 30, 2016 at 01:08 PM
I've spent several hours on this and I'm at wits end. Windows 10, 64-bit system, boots to BSOD stating "invalid object in the boot configuration data store' (error codes 0xc0000034 and 0xc000021a)

I have Win10 Pro (64-bit) disc in drive and can get it to launch to the installation screen. 2 sticks of RAM on 'new' system build that has been fine for 6-8 weeks.

Notes:
- I've reset MB bios to defaults
- I can boot into System Recovery Options on the original DVD

(1) "Startup Repair" from the advanced options fails

(2) "System Restore" fails

- Error "BootAppWindow RecEnv.exe - ... some referenced memory error - cannot place into memory due to I/O error status"

(3) I can go to a command prompt, but not able to complete some tasks:

bootrec /scanos --> OK
bootrec /fixmbr --> OK
bootrec /fixboot --> OK
bootrec /rebuildbcd --> failed "requested device not found"

...

What happens if I try to re-install from DVD? Will existing OS be recognized?

12 Comments

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#2
bsod. it is hard to exactly pinpoint what actually causes bsod. in my experience its usually a bad memory stick.
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#3
If you need data off the PC, try a live Linux USB. If you don't need data, try a reinstall and see what happens. If it were me, I'd run memtest86 and see what happens. Also you could run a HDD or ssd benchmark to make sure things are ok.
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#4
dvd boot to the partition step, delete the 100mb if has one. then go back to rebuild


i think it has bad sector
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#5
Quote from Jabbit View Post :
If you need data off the PC, try a live Linux USB. If you don't need data, try a reinstall and see what happens. If it were me, I'd run memtest86 and see what happens. Also you could run a HDD or ssd benchmark to make sure things are ok.
Yes I agree with this route to go down. Sounds like a failing component most likely.
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#6
Ugh. Gave up - took system into Microcenter and they picked and poked at it but couldn't get any further (they apologized lol). They suspect a bad Microsoft update. SSD is fine. Reinstall of OS only option.

Should I ask them to run a memory test?

Quote from Jabbit View Post :
If you need data off the PC, try a live Linux USB. If you don't need data, try a reinstall and see what happens. If it were me, I'd run memtest86 and see what happens. Also you could run a HDD or ssd benchmark to make sure things are ok.
Winner. Microcenter also made this suggestion and I want to try this but haven't touched UNIX in well over a decade LOL (don't judge me!). Can someone provide a "click here for a linux noob to learn how to create a linux USB boot drive to access compromised, NTFS formatted hard drives"

Note: I have a NAS drive for databackup - would appreciate some guidance how to map the drive using said boot drive.
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Last edited by Ram|bunc|tious June 3, 2016 at 05:27 AM
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#7
Quote from Ram|bunc|tious View Post :
Ugh. Gave up - took system into Microcenter and they picked and poked at it but couldn't get any further (they apologized lol). They suspect a bad Microsoft update. SSD is fine. Reinstall of OS only option.

Should I ask them to run a memory test?



Winner. Microcenter also made this suggestion and I want to try this but haven't touched UNIX in well over a decade LOL (don't judge me!). Can someone provide a "click here for a linux noob to learn how to create a linux USB boot drive to access compromised, NTFS formatted hard drives"

Note: I have a NAS drive for databackup - would appreciate some guidance how to map the drive using said boot drive.
UNIX and Linux are different, just had to point that out.

Very simple to make a bootable USB. Download the Ubuntu ISO here http://www.ubuntu.com/download then use RUFUS to create the bootable USB Drive https://rufus.akeo.ie/

Don't do an install but just run once it's booted, read things carefully and you will be fine.

Yes It's worth running a memory test but thats super easy to do yourself, no use in having microcenter do it. A bad windows update should not cause a corrupt MBR, It's possibly your drive has sector level issues though or may have been infected with something that corrupted the MBR, those do exist.
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#8
Quote from LiquidRetro View Post :
UNIX and Linux are different, just had to point that out.
Ha! Now I know.

Quote from LiquidRetro View Post :
Very simple to make a bootable USB. Download the Ubuntu ISO here http://www.ubuntu.com/download then use RUFUS to create the bootable USB Drive https://rufus.akeo.ie/

Don't do an install but just run once it's booted, read things carefully and you will be fine.
Perfect, thank you.

Quote from LiquidRetro View Post :
Yes It's worth running a memory test but thats super easy to do yourself, no use in having microcenter do it. A bad windows update should not cause a corrupt MBR, It's possibly your drive has sector level issues though or may have been infected with something that corrupted the MBR, those do exist.
Can I do those tests from the USB boot? (Microcenter purchased RAM btw so I figured its worth asking them to try it out)
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#9
Quote from Ram|bunc|tious View Post :
Can I do those tests from the USB boot? (Microcenter purchased RAM btw so I figured its worth asking them to try it out)
You can run memtest from a live USB. I've never actually used it, but [URL="https://sourceforge.net/p/boot-repair-cd/home/Home/"]boot-repair-cd/URL] should work if it's an MBR problem
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#10
Quote from Ram|bunc|tious View Post :
Ha! Now I know.



Perfect, thank you.



Can I do those tests from the USB boot? (Microcenter purchased RAM btw so I figured its worth asking them to try it out)
Yes/no, it will be a different boot environment but I would use Rufus to put the ISO on the usb drive. Looks like ubuntu has memtest build in possibly http://askubuntu.com/questions/59...t86/591502 or use it standalone for the latest version http://www.memtest86.com/
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Quote from LiquidRetro View Post :
Yes/no, it will be a different boot environment but I would use Rufus to put the ISO on the usb drive. Looks like ubuntu has memtest build in possibly http://askubuntu.com/questions/59...t86/591502 or use it standalone for the latest version http://www.memtest86.com/
I'm just having a hell of a time here. I have a pair of USB drives loaded by Rufus with Ubuntu & the drive repair tool but can't get my Asus motherboard to boot to USB. Seems like it has a "secure boot" mode that people just have a heck of a hard time disabling. I have the USB drive as the only option to boot, fast boot off, passwords set on bios, and still not getting anywhere :sad walk:

http://www.asus.com/support/FAQ/1016356/
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#12
Did you try to rewrite the MBR?

Microsoft [bing.com]give you a way.
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#13
Quote from Ram|bunc|tious View Post :
I'm just having a hell of a time here. I have a pair of USB drives loaded by Rufus with Ubuntu & the drive repair tool but can't get my Asus motherboard to boot to USB. Seems like it has a "secure boot" mode that people just have a heck of a hard time disabling. I have the USB drive as the only option to boot, fast boot off, passwords set on bios, and still not getting anywhere :sad walk:

http://www.asus.com/support/FAQ/1016356/
What options did you pick in Rufus? I don't have a PC in front of me but you might have to image the USB drive a different way, uefi or gpt or something, can't recall specifics. Also, don't change the boot order. Figure out what key gets you the boot menu or boot option...instead of delete for bios, there will be another key that gets you a one-time boot menu. And don't use a front panel USB port, use one that is on the back of the PC .
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