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Windows 10 Error 0xc000021a
Boggin:
Is it possible that taking out the CMOS battery for about 5 mins could reset the BIOS ?
If you post the make & model of your machine, I'll have a Google to see if I can find a strip down tutorial in how to replace the CMOS battery, but on some models the battery is soldered in.
I don't know what the Kaspersky disk does beside malware scan to get a system back up and running again but it resolved two black screens for me following failed restore points.
The first time it took about 9hrs to scan the Win 7 system and then I closed it down as prompted and when I came back from making a cup of coffee, I noticed it was running a chkdsk which fixed it.
The second time, while the scan was much quicker even though it was on a much larger HDD, I removed the DVD, power shut down and the machine booted fine when I switched back on.
I'm not sure how you have ended up with a corrupt database though.
Zeurth:
--- Quote from: Boggin on December 18, 2017, 02:01:04 am ---Is it possible that taking out the CMOS battery for about 5 mins could reset the BIOS ?
If you post the make & model of your machine, I'll have a Google to see if I can find a strip down tutorial in how to replace the CMOS battery, but on some models the battery is soldered in.
I don't know what the Kaspersky disk does beside malware scan to get a system back up and running again but it resolved two black screens for me following failed restore points.
The first time it took about 9hrs to scan the Win 7 system and then I closed it down as prompted and when I came back from making a cup of coffee, I noticed it was running a chkdsk which fixed it.
The second time, while the scan was much quicker even though it was on a much larger HDD, I removed the DVD, power shut down and the machine booted fine when I switched back on.
I'm not sure how you have ended up with a corrupt database though.
--- End quote ---
Well I installed another HD in it and the laptop works.
Also as for opening it up, I wouldn't feel comfortable doing it.
andddd Kaspersky rescue disk using their to usb program, it keeps getting corrupted database and the fix I found won't work.
I'll keep looking.
Boggin:
I haven't found any definitive fix for it yet - this is the first time I've seen this reported, but Google is awash with similar experiences.
So can you go wherever you want now with that HDD in ?
Zeurth:
--- Quote from: Boggin on December 20, 2017, 07:51:38 am ---I haven't found any definitive fix for it yet - this is the first time I've seen this reported, but Google is awash with similar experiences.
So can you go wherever you want now with that HDD in ?
--- End quote ---
I only had one hard drive slot so I used it to test the hardware to make sure that wasn't the issue and it wasn't.
I did end up getting into the hard drive I've been trying to!
I used Hiren’s BootCD to boot to their mini windows xp version.
I opened to the hard drive list, right clicked the hard drive with the data in order to use command prompt.
(since it was from the drive I didn't get a write protection.)
I did a chkdsk but not sure if that contributed to me being able to boot into it.
Then proceeded to drag and drop my registry back ups into the registry.
Afterwards I had to use the hiren's bootcd usb in order to select the hard drive since it was stuck on intel's boot agent but I got in.
Any suggestions on everything to run in order to stop this from happening just in case shutting down leads to the same thing?
Boggin:
You could create a repair or install disk to boot up with and create a system image so you wouldn't have to go through Windows to restore.
To restore an image from an external HDD you need to boot up outside of Windows to select the image option from Troubleshoot.
Is it too late to send this machine back to the seller as it has an unknown BIOS password on it which restricts you to its full operation ?
That's perhaps something you wouldn't necessarily have been aware of until later.
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