Windows Server 2012 R2 restart loop

Question

Today we facing windows server 2012 R2 keep on restart loop after trying to load the windows login.

It prompt "Your PC ran into a problem and needs to restart. We're just collecting some error info, and then we"ll restart for you".

This problem happen to 2 servers.

We suspect is due to windows updates.

We don't know which update causing this problem.

We tried enter to safe mode, but cannot go in as well.

We are using HP DL380e G8.

Please advice on how to resolve this issue.

T.Q.

Regards,

CL Lee

Answer 1

Hi,

Welcome to Microsoft Q&A.

Please help check below questions so we can narrow down the issue

1. Is the problematic server a physical machine or virtual machine?
2. Is there any other error code?
3. What changes had been made before the issue started? (Patch, hardware, application update and so on. )

Troubleshooting Tips are as follow :

1. Run following commands for auto repair in WinRE/WinPE, restart to see if it can boot normally.
   sfc /scannow
   startrep.exe (under x:\sources\recovery)

2) Force the machine to reboot --> keep pressing F8 --> into Advanced Boot Options --> select Last Known Good Configuration to see if you can access the system.

3) If both safe mode and Last Known Good Configuration fail, we have to boot into WinPE and run following commands to remove the recent update.

X:\sources> dism /image:C:\ /get-packages > C:\PackagesList.txt

Open file C:\PackagesList.txt from notepad
Search the packages you want to remove from notepad and copy the Package Identity

X:\sources> dism /image:C:\ /remove-package /PackageName:<Package Identity>
X:\sources> del /get-packages > C:\PackagesList.txt
X:\sources> cd C:\windows\system32\codeintegrity
C:\windows\system32\codeintegrity> del bootcat.cache

Reboot PC.

4) You can also try to fix BCD files.
Boot into WinRE and run following command lines:

Bootrec /Rebuildbcd

Please remember to accept the reply as answer if it helps.

Best regards,
Molly

Answer 2

Might also try F8 at start then Last Known Good

--please don't forget to Accept as answer if the reply is helpful--