Solved BSOD with APC_INDEX_MISMATCH

[pumafred]

The config is correct. If you unplug the other HD"s does the problem replicate? If not then there may be stray boot code on one that is interfering. A solution for this is to move the data off of the problem HD to wipe with Diskpart Clean Command.

How do I "unplug the other HD´s"? Should I physically disconnect them?

 

[gregrocker]

Yes, just pull their data cable, or disable in BIOS setup.

 

[pumafred]

The config is correct. If you unplug the other HD"s does the problem replicate? If not then there may be stray boot code on one that is interfering. A solution for this is to move the data off of the problem HD to wipe with Diskpart Clean Command.

If problem persists with only Win7 HD plugged in then sort the boot by running Startup Repair - Run 3 Separate Times no matter what it reports. This will ensure the System boot files are intact and working correctly, however it can't always correct any bad boot code which remains on the HD from previous installs.

It could also be a hardware problem. CHeck for newer BIOS Update - what is it for? Also look in BIOS setup at fast boot options to try each. We have hardware experts who can help you with it more. I specialize in installation.

I unplugged the other two HDs and the problem continued.
I ran Startup Repair three times (every time it said it found nothing wrong), and problem continued.
I tried an older BIOS and a beta BIOS, and the problem continued.
The reason I am not wholly convinced that it is the hardware, is that there is no such problem if I use an Ubuntu startup disk or a Windows repair disk.

 

[gregrocker]

Try the Manual commands to Rebuild BCD from How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows

If all of these fail then the remaining option is to move the data off the HD, wipe it with Diskpart Clean Command to clean the boot sector of possible bad code, follow these steps to be assured of getting a perfect Clean Reinstall - Factory OEM Windows 7 even for retail.

 

[pumafred]

Thanks. Am I correct in interpreting that the last part would involve me having to reinstall all my software again? Nightmare.

 

[pumafred]

Ok, we´re getting somewhere!
Fingers crossed, but the startup loop seems to have gone.

What I did:
1) Rather recklessly, considering I don't know what I am doing, I followed the instructions for BootRec, deleted the BCD and did /RebuildBcd. The boot loop continued.
2) Then I did bootrec /FixBoot . This seems to have done the trick!

I already rebooted three times successfully. However, I will continue testing for a day or so before marking the problem as solved.

Thank you everybody for your generous help!! Great website to have discovered.

 

[gregrocker]

Good news.

I am still searching in 267 bookmarks for a demonstration of the use of those commands which sequences them for you. Once it's found I'll move it to the top so I don't lose track of it again. But it seems like you found what worked.

Never be afraid of a Clean Reinstall. It's often better than getting a new PC, considering all the preinstalled crapware which comes with today's new PC's. You only have to do it once then preserved a completed reinstall with backup imaging. It's also a specialty of these forums so we can help you get it perfect.

 

[pumafred]

Ok, it would appear my PC is definitely fixed. Thanks very much Gregrocker!