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I believe I have a bios rootkit


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I recently installed windows 10 on a new computer that had my girlfriend's old hard drive in it and it worked fine until I connected to the internet, I barely get 10 minutes on the internet and it automatically shuts itself down, and when I try to reboot, windows does not load, and I have to either restore to a previous version or completely reinstall windows. I've done this process multiple times already trying different things such as wiping the hard drive, running all the windows 10 defender scans, and the FRST64 scan. But I get the same results every time. I connect to the internet and windows completely stops working after 5-10 minutes.

Addition.txt FRST.txt

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Hello Lightningbread and welcome to Malwarebytes,

Please download Malwarebytes Anti-Rootkit from here
 
  • Right click on the tool (select "Run as Administrator) to start the extraction to a convenient location. (Desktop is preferable)
  • Open the folder where the contents were unzipped and run mbar.exe
  • Follow the instructions in the wizard to update and allow the program to scan your computer for threats.
  • Click on the Cleanup button to remove any threats and reboot if prompted to do so.
  • Wait while the system shuts down and the cleanup process is performed.
  • Perform another scan with Malwarebytes Anti-Rootkit to verify that no threats remain. If they do, then click Cleanup once more and repeat the process.
  • When done, please post the two logs produced they will be in the MBAR folder... mbar-log.txt and system-log.txt

Thank you,

Kevin..

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Hi Kevin, thanks for the response. I downloaded mbar.exe on to s my flashdrive and ran it on my computer with the virus twice, the results were no malware detected, so I decided to try to connect to the internet and the same problem occurred. I did notice however when I connect to the internet, windows 10 automatically tries to download a bunch of "updates" onto my computer that may be crashing it.

 

mbar-log-2021-01-20 (11-34-26).txt system-log.txt

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Open your computer with internet off. Type or copy/paste windows updates into the search function on the taskbar, then hit enter...

Your PC should open to the windows update options. From there select "Pause for 7 days" that should pause windows updates..

Connect your internet, does it still crash...?

Next,

Download Farbar Service Scanner from here: http://www.bleepingcomputer.com/download/farbar-service-scanner/dl/62/ and run it on the computer with the issue.

Make sure the following options are checked:
 
  • Internet Services
  • Windows Firewall
  • System Restore
  • Security Center/Action Center
  • Windows Update
  • Windows Defender
 
  • Press "Scan".
  • It will create a log (FSS.txt) in the same directory the tool is run.
  • Please copy and paste the log to your reply.
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Tips to help protect from infection

Thanks

 

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