Windows 10: Multiple black disappearing cmd windows poping up at Start up. Potential Malware.

At each startup. multiple black disappearing cmd windows pop, I followed the instructions of https://answers.microsoft.com/en-us/windows/forum/all/a-black-window-probably-cmd-prompt-pops-up-in-the/cbb3b9c3-67ef-4ddf-9773-e1aeae9be32a I would like to submit the FRST.txt and Addition.txt files. I suspect that its a hacking attempt, as I have previously got infected with Supposedly "rubber ducky USB" exploit Backdoor Malware, which is intricately linked to reverse PowerShell. 11 Backdoors were detected by Win + R > mrt. I have done a clean reinstallation of windows OS though and I hav

:)

 

Window pops up and disappears (Not CMD)

There is a window that keeps poping up and disappearing instantly in Windows 11 but it does not look like a CMD window, more like some program but I can't tell what it is because it happens way too fast. I tried screen recording to try and pick it up but it does not show at all in the playback.

The problem started after I tried to repair my previous Office 2019 Pro Plus with the original autoKMS i had already used. I completely deleted the Office 2019 Pro plus since then and bought a new one in case this would fix the issue but it did not.

All I can find in the internet is how to resolve a cmd pop up (which is not the same as my problem) yet I still tried all those steps just in case they would fix the problem but nothing changed. I also use Kaspersky anti-virus, have performed a full scan twice but nothing is detected.

Can anyone suggest a solution?

Thank you.

 

black box keeps poping up then disappears ever since windows 10 install

Hi,



Thank you for posting on Microsoft Community.



Before assisting further, did you try the suggestion by Eeshwar Kumar from the above post?



I suggest you to perform Clean boot by following the steps from the link below and check if the issue is resolved.



Putting your system in Clean Boot state helps in identifying if any third party applications or startup items are causing the issue.



You can open the system configuration window in Windows 10:



Step 1: Using
run command.

• Press Windows Key + R keys on the Keyboard.
• Type msconfig.msc and press Enter.

Step 2: Using
Cortana.

• Press Windows icon key on the keyboard and type
  msconfig.
• Select the top most search result.

Follow the steps from 3 under How to perform a clean boot
for Windows 8.1 and Windows 8 from the link below (The steps for clean boot suggested in the link below for
Windows 8/8.1 is applicable for Windows 10 as well):

https://support.microsoft.com/en-us/kb/929135



Disclaimer: Start the computer in normal mode refer the section,
How to reset the computer to start normally after clean boot troubleshooting
from the link above.



Write back to us with the status of the issue for further assistance. Your reply is most important for us to ensure we assist you accordingly.



Thank you.

 

Black screen after 'Starting Windows' sequence

Sounds like the old... windows black screen of death.

Try this quoted from "VisiHow" article "Repair Windows 7 Black Screen of Death":

They, also, have some other options there, too.
Google search and you will find a lot of the "Windows Black Screen of Death with cursor" fixes.