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Explorer.exe won't run after trying to deal with virus


nameshake
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I'm in desperate need of help.

I very very stupidly ran a "codec" file that turned out to be a virus and have been trying to deal with the fallout since then. I was going to post on here about that today and now explorer won't even start.

Windows loads to black screen, and when trying to start explorer via "run" on task manager, it gets killed and desktop never appears.

Please please help - this is making me feel horrible.

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Hello,
    
 
They call me TwinHeadedEagle around here, and I'll be working with you.
 
     
    
Before we start please read and note the following:

  • Limit your internet access to posting here, some infections just wait to steal typed-in passwords.
  • Please be patient. I know it is frustrating when your PC isn't working properly, but malware removal takes time.
  • Don't run any scripts or tools on your own, unsupervised usage may cause more harm than good.
  • Do not paste the logs in your posts, attachments make my work easier. There is a More reply options button, that gives you Upload Files option below which you can use to attach your reports. Always attach reports from all tools.
  • Always execute my instructions in given order. If for some reason you cannot completely follow one instruction, inform me about that.
  • Stay with me to the end, the absence of symptoms doesn't mean that your machine is fully operational.
  • Note that we may live in totally different time zones, what may cause some delays between answers.
  • Do not ask for help for your business PC. Companies are making revenue via computers, so it is good thing to pay someone to repair it.
  • If I don't hear from you within 3 days from this initial or any subsequent post, then this thread will be closed.

:excl: I can't foresee everything, so if anything unexpected happens, please stop and inform me!
:excl: There are no silly questions. Never be afraid to ask if in doubt!
 
 
 
  warning.gif Rules and policies
 
We won't support any piracy.
That being told, if any evidence of illegal OS, software, cracks/keygens or any other will be revealed, any further assistance will be suspended. If you are aware that there is this kind of stuff on your machine, remove it before proceeding!
The same applies to any use of P2P software: uTorrent, BitTorrent, Vuze, Kazaa, Ares... We don't provide any help for P2P, except for their removal. All P2P software has to be uninstalled or at least fully disabled before proceeding!
 
Failure to follow these guidelines will result with closing your topic and withdrawning any assistance.

 
 
 
 
What is your operating system and architecture (32-bit or 64-bit)?

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We will have to work outside windows to try to fix your problem:
 
 
 
 
Please download Farbar Recovery Scan Tool and save it to a flash drive.

  • Plug the flashdrive into the infected PC.
  • Restart your computer and tap F8 to bring up the Advanced Menu, then click Repair your computer
  • Follow the prompt to enter keyboard input method, and then the prompt to enter a password. If the machine does not have a password, simply click Enter.
  • In the Choose Recovery Tool menu select Command Prompt.
  • You will see a big black window with a blinking cursor (command prompt).
     
     
     
    notepad.png Access the notepad and identify your USB drive
     
    In the Command Prompt please type in:
    notepad
    and press Enter.
  • When the notepad opens, go to File menu.
  • Select Open.
  • Go to Computer and search there for your USB drive letter.
  • Note down the letter and close the notepad.
     
     
     
    FRST.gif Scan with Farbar Recovery Scan Tool
     
    Once back in the command prompt window, please do the following:
  • Type in e:\frst.exe and press Enter.
    You need to replace e with the letter of your USB drive taken from notepad!
  • FRST will start to run. Give him a minute or so to load itself.
  • Click Yes to Disclaimer.
  • In the main console, please click Scan and wait.
  • When finished it will produce a logfile named FRST.txt in the root of your pendrive and display it. Close that logfile.
     
    Transfer it to your clean machine and include it in your next reply.
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Download attached fixlist.txt and save it to your USB flashdrive as fixlist.txt
 
>>  Boot into Recovery Environment
 
 
Start FRST in a similar manner to when you ran a scan earlier, but this time when it opens ....

  •    Press the Fix button once and wait.
  •    FRST will process fixlist.txt
  •    When finished, it will produce a log fixlog.txt on your USB flashdrive.

>>  Exit out of Recovery Environment and post me the log please.
 
 
 
Try to boot Windows normally...

fixlist.txt

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FRST.gif FRST search
 
Once again we shall use FRST for additional checks. Re-run FRST/FRST64 the same way:

  • Copy winlogon.exe into the Search: field in FRST then click the Search Files button.
  • FRST will search your computer for files and when finished it will produce a log Search.txt in the same directory the tool is run.
  • Please attach it to your reply.

 

 

 

 

Download attached fixlist.txt and save it to your USB flashdrive as fixlist.txt
 
>>  Boot into Recovery Environment
 
 
Start FRST in a similar manner to when you ran a scan earlier, but this time when it opens ....

  •    Press the Fix button once and wait.
  •    FRST will process fixlist.txt
  •    When finished, it will produce a log fixlog.txt on your USB flashdrive.

>>  Exit out of Recovery Environment and post me the log please.
 
 
 
Try to boot Windows normally...

fixlist.txt

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I get "starting windows" on one black screen, then "please wait" with windows 7 home premium at the bottom of the blue screen while windows is seemingly loading, but then there is just a black screen with a cursor. There is no task bar, start menu or desktop.

I can Ctrl-Alt-Del and get the blue screen with task manager etc. I can open task manager and that's where I tried to "run" explorer and it closes itself down again.

CHKDSK seems to have stopped at stage 3. "281344 file SDs/SIDs processed" and now thee is just a blinking cursor.

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FRST.gif FRST search
 
Once again we shall use FRST for additional checks. Re-run FRST/FRST64 the same way:

  • Copy explorer.exe into the Search: field in FRST then click the Search Files button.
  • FRST will search your computer for files and when finished it will produce a log Search.txt in the same directory the tool is run.
  • Please attach it to your reply.
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