It happens that for no apparent reason the monitor screen turns black and signals an error. Moreover, this same problem with the code 0xc00000e9 when loading Windows 7 occurs again and again. You can deal with it, but first we will find out why it appeared.
Causes of occurrence

The cause of error 0xc00000e9 when loading Windows 7 can be:
- Problems with the registry. A program downloaded and installed (especially from an unreliable source) can damage important operating system data with its registry files.
- The files needed by the system were deleted by a virus program.
- Problems during installation or after. If some error occurred during the installation of Windows, or the assembly was not entirely successful (this applies to an unsuccessful pirated version), then there may be some problems, like this one.
Fixing
Since this problem occurs during the startup of the operating system, you will not be able to boot Windows in the usual way and fix it. Therefore, get into the OS and eliminate 0xc00000e9 whenyou can boot windows 7 using other methods.
Reboot the computer, then press F8 until the operating system loads. Instead, additional boot options will appear, among which you need to select "Last Known Good Configuration".

Then the computer should boot from the last successful start. Now you can scan the registry using a special utility, such as WinThruster. This is one of the best utilities for detecting problems in the registry, but, unfortunately, with a paid license. You can also delve into the registry manually, but without special knowledge it’s better not to go there, otherwise you can aggravate the situation.
Besides, it will not be superfluous to completely scan your computer with an antivirus for a virus that can be responsible for all troubles.
Rollback
Probably the easiest and most effective way to fix error 0xc00000e9 when booting Windows 7 on a laptop is to do a system restore. This process is able to restore the system using a previously saved restore point. It is usually created just before installing various programs, during computer startup, and at other times that can be configured.
You can view available restore points and roll back as follows. We also start from Last Known Good Configuration. If it fails, then go to Safe Mode (the same additional boot options, F8 key). Run to Start//All//Accessories//Utilities and run"System Restore". We pass “Next”, where the available points with the date and reason for creation will be indicated in the window.

Select the one that was created before the error 0xc00000e9 appeared when loading Windows 7, and then return to it. In this case, all installed programs after its creation will be deleted. You can see what exactly you have to donate by clicking on the appropriate button.
If it was not possible to do this through F8 due to the 0xc00000e9 problem when loading Windows 7, the laptop can be rolled back using a boot disk or flash drive. The system on the media must be exactly the same as the one installed on the computer. When the Windows 7 installation window opens, instead of "Install", click on "System Restore" at the bottom left. Then everything is the same.

Reinstallation
If everything is hopeless, and the problem 0xc00000e9 does not disappear when loading Windows 7, you should reinstall the OS. If there is a licensed disk, or at least a normal working build, then just install it as before, and that's it.
In the case when the installed OS with errors, you need to find a fully working one. It is best to buy a licensed Windows 7 disc and be sure that everything is fine. If there is no opportunity to buy, you can download the pirated version of the OS again (which is highly undesirable, since there is a possibility of being fined for using pirated products). Only this time you need to choose more carefully, read reviews andcomments and learn more about the features and additions of this product.
If even after reinstalling the error 0xc00000e9 when loading Windows 7 on a laptop does not disappear, then the problem is in the internal hardware. In this case, be sure to contact the service center to diagnose and replace the damaged components. However, this procedure will take a lot of time and money.
Be careful
You should always be careful when downloading various software from unknown sites. If you don’t like the resource right away, it’s better to leave it, otherwise you can get not only a problematic program, but also a couple of viruses. The same applies to downloading a pirated OS. It is better not to do this at all, but if you really had to, then you need to choose carefully, otherwise you can be left with nothing.