Recovering from a Major Windows 10 Crash
Other Windows 10 related notes
If you have problems, you should get in touch with the LSCE system administrators
(referenced below as your favorite IT people
) and bring them your desktop/laptop, if you are not too far from LSCE. Otherwise, you can try to use the information on this page
The information you can find on Google is not always the best and this page will hopefully help you recover your PC, or at least understand a bit what has happened and use what you find on Google more safely and efficiently… Avoid downloading scripts or external applications that are supposed to analyze and solve your problem, unless it is from a Microsoft site, or if you really trust the source
Most of the links on this page are links to English
pages of Microsoft web sites. You can easily change the language of those technical pages to French
by changing the language setting at the bottom of each page, or by replacing the
string in their URL
You don't have to remember everything on this page, but try to remember at least that this pages exists and how to find it! Maybe you can bookmark this page on your smartphone…
Don't Panic (yet…)!
What if I can't turn off my computer?
What kind of crash?
You don't have to worry too much about a single crash (though you should investigate what is wrong). By major crash we mean that you have unsuccessfully tried several times to reboot your computer, or that the computer crashes very quickly/regularly once you are logged in. Maybe you have even already ended up in the Windows Recovery Environment (Windows will automatically boot in Win RE after several consecutive aborted restarts)…
Your computer does not start at all or behaves strangely due to a failing disk, memory errors, overheating, a defective (and swollen) laptop battery or other hardware related problems
Just to be sure, unplug all the external devices from your computer (webcam, USB sticks, external disks) and check if you are still getting errors
Maybe you'll have to use the warranty of your computer (more on this later). PC computers bought at LSCE have at least 3 years of international warranty. If you notice something suspicious on your PC, don't wait till the warranty has expired to try to fix it
You can find out on the manufacturer's site how to run the built-in diagnostics
Sometimes your computer will only be able to beep or flash some leds. You can find out what the sequence of sounds/flashes means on the computer manufacturer web site
The Windows Recovery Environment and the Safe Mode
There is a good chance that you will end up directly in the Windows Recovery Environment (aka Windows RE) after the crash, or after several failed attempts of restarting your computer (and Windows), something looking like the screenshot below
You have access to several maintenance option in the Windows RE, but you will most probably use it to Start your PC in safe mode (follow the steps in From a black or blank screen) or Mode sans échec
Note: most other actions you could take from the Windows RE are detailed in Recovery options in Windows 10
What to do ?
Hopefully you can show your computer to your favorite IT people and let them handle things! But you may be on your own, far away from work…
Just try not to make the situation worse!
You should pay special attention to this section when your computer is (still) healthy
Know where to find the serial number (or service tag
) of your computer. It is probably on a sticker somewhere on the computer, and should also be available in the BIOS
Know when your warranty expires (you need to know the serial number) and get things fixed before the expiration date
Make sure the system protection by Recovery
is active. In case of a software problem (the most common problem), you may be able to go back to a state when your computer was stable
Remember the password of a local account that has admin access to your computer (the kerberos password of
account@LSCE.IPSL.FR may not work when you try to recover your PC)
If all or part of your disk is encrypted, try to have a convenient way to access the recovery key(s)
Find my BitLocker recovery key
⇒ You need to get this key
from your favorite IT people, and store it in a safe place
that you can easily access even if you are not in your office or at home.
The key is a combination of:
a unique (and seemingly) random text string id identifying the crypted disk
a unique text string key used to unlock the disk
Do not store (a printed version of) the key with your computer (you might as well remove the encryption…)
You could store a text file with your key(s) on the reasonably safe sharebox server, but you will need some internet access to get the keys (sharebox can display text files, so you don't need to download the text file to access the key)
Use the Download BlueScreenView with full install/uninstall support at the bottom of the page
It's easier to install BlueScreenView when your computer is working correctly, than right after a crash, when you are not even sure to have network access
This will allow you to analyze the dump/log files created by Windows when there is a BSOD type crash
Other potentially useful software
: allows you to monitor the temperature of your processors, if you think your PC is overheating, or the fan is making more noise than usual. See also:
: Comprehensive Hardware Analysis, Monitoring and Reporting for Windows
Analyze your situation
It's best if you can remember what you did or what happened between the happy time when everything worked smoothly and the seemingly desperate present situation. Most probably you manually updated your system (or Windows did it automatically) or installed a new program, or connected some new hardware or something similar that corrupted some files.
If your laptop fell down, there is a good chance that you are experiencing hardware problems, but this will probably not be covered by the warranty (unless the warranty mentions Accident Damage Protection or garantie casse or something similar)
Best case scenario: your favorite IT people can take care of the problem!
Otherwise you hopefully have some internet access on another computer, or on your smartphone. Use it to access this page (or similar pages that you can trust) and follow the instructions and links
There is no standard solution. In the worst case, you can always remove the disk from your computer and plug it to an external adapter (available at LSCE) to recover at least part of the disk. This will require extra work if the disk is encrypted (it your favorite IT people took care of the encryption, they should have the BitLocker recovery key).
Check the be_prepared section to determine how to get in touch with Dell or HP
The most likely case, if you got a BSOD, is that a new/updated device driver is not working correctly and will have to be uninstalled. We try to cover this problem below.
The idea, in the case of a driver problem (but it may help solve other problems), is to:
You probably have to follow the steps in From a black or blank screen
If your computer does not crash in safe mode, this means that your problem is indeed due to a faulty driver, or some software started when Windows starts, or when you start your session
to get some information about the crash (you'll know at least how many times you crashed…)
This may be a good time to create a backup of your critical data, just in case
The instructions below will help you find which Windows updates or Programs were installed recently and uninstall them
Open the Troubleshoot blue screen errors
page, select When did you get the error? ⇒ After an update was installed
, and then look for Once your device is in safe mode
and follow the steps
If you did not find anything about the device that may cause problems in the previous step, open the device manager
and then go back to the previous version of the driver(s), if possible, or just remove the driver(s) and let Windows use the default driver(s)
Boot in normal mode and if things are OK, try to have Windows update the computer again
If booting in safe mode did not help, and you still don't have an easy access to your IT people, you can explore other Recovery options in Windows 10. From the Windows Recovery Environment, you can even theoretically re-install Windows 10 and keep your data
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