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Computer crashed by virus or trojan


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#1 chrisvan

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Posted 10 February 2011 - 08:09 PM

I was on the internet and my microsoft security essentials detected a virus so I cleaned it and then it just kept popping up and I kept clearing it. I walked out of the room and came back in and I had a pop up so I tried to run my malwarebytes and then it crashed windows. I can't get on anymore or even get into safe mode. I really need some help with this. When I turn the computer on I either have to push f1 to go to windows or f2 for setup. I can get into setup but not windows and when I go up to safe mode it starts to load and then just stops.

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#2 boopme

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Posted 10 February 2011 - 09:08 PM

I will have some look here that handles these PC's. It may not be today.
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#3 chrisvan

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Posted 10 February 2011 - 09:41 PM

Thank you. Any help will be appreciated. Its a dell computer and I use windows xp. I'm having to use my laptop right now.

#4 Elise

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Posted 11 February 2011 - 04:24 AM

Try this please. You will need a USB drive.

Download GETxPUD.exe to the desktop of your clean computer
  • Run GETxPUD.exe
  • A new folder will appear on the desktop.
  • Open the GETxPUD folder and click on the get&burn.bat
  • The program will download xpud_0.9.2.iso, and upon finished will open BurnCDCC ready to burn the image.
  • Click on Start and follow the prompts to burn the image to a CD.
  • Remove the USB & CD and insert it in the sick computer
  • Boot the Sick computer with the CD you just burned
  • The computer must be set to boot from the CD
  • Gently tap F12 and choose to boot from the CD
  • Follow the prompts
  • A Welcome to xPUD screen will appear
  • Press File
  • Expand mnt
  • sda1,2...usually corresponds to your HDD
  • sdb1 is likely your USB
  • Click on the folder that represents your USB drive (sdb1 ?)
  • Press Tool at the top
  • Choose Open Terminal
  • Type the following and press enter:

    dd if=/dev/sda of=mbr.bin bs=512 count=1

  • Press Enter
  • After it has finished a file will be located on your USB drive named mbr.bin
  • Remove the USB drive and insert it back in your working computer and navigate to mbr.bin, zip it up and attach it to your next reply.

This will allow me to have a look at the MasterBootRecord of your drive and see if it is infected.

regards, Elise


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#5 chrisvan

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Posted 11 February 2011 - 09:59 PM

Ok what do I do if I don't have a flash drive?

#6 Elise

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Posted 12 February 2011 - 03:01 AM

Maybe you have the possibility to borrow one? If not, we can attempt to fix this without a backup, but I rather not do that.

What happens when you attempt to boot in safe mode? What is the last screen you see? And for normal mode?

regards, Elise


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#7 chrisvan

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Posted 12 February 2011 - 10:25 AM

Normal mode goes to a black screen and safe mode starts show the program files and then just stops and freezes on one of the program files.

#8 Elise

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Posted 12 February 2011 - 10:53 AM

Do you have an XP CD at hand we can use (if not, no problem, I'll post additional instructions)?

regards, Elise


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#9 chrisvan

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Posted 12 February 2011 - 11:10 AM

No I sure don't. It got lost in the move.

#10 Elise

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Posted 12 February 2011 - 11:27 AM

Please download ARCDC from Artellos.com.
  • Double click ARCDC.exe
  • Follow the dialog until you see 6 options. Please pick: Windows Professional SP2 & SP3
  • You will be prompted with a Terms of Use by Microsoft, please accept.
  • You will see a few dos screens flash by, this is normal.
  • Next you will be able to choose to add extra files. Select the Default Files.
  • The last window will allow you to burn the disk using BurnCDCC
Your ISO is located on your desktop.

  • Insert the CD-ROM you just created into the CD-ROM drive, and then restart the computer.

  • If your PC is not booting from the CD, you need to change the boot order:
    • Restart your PC
    • As soon as you get an image, press the Setup key. This is usually F2, or Del. On some machines the key can also be a different one. It should, however, be stated on the screen which key is the setup key.
    • Once you enter the computer's BIOS, use the arrow keys and tab key to move between elements. Press enter to select an item to change.
    • Navigate to the tab, where you can set the boot order. It should be called Boot or Boot order
    • The tab should now show your current boot order.
      If the CD-drive is not at the top, please navigate to the CD-Rom drive with the keys arrows. Then move it to the top of the list. The keys for switching boot position are usually + to move up and - to move down. However they can be different, but they should be stated in the help, so that you can find them easily.
    • Once the CD-drive is on top of the boot order, navigate to Exit and select Exit saving changes.
  • Your PC should now boot from your XP-CD.
    Click to select any options that are required to start the computer from the CD-ROM drive if you are prompted.

  • When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
  • When prompted to choose a windows installation, type 1 and press enter.
  • When you are prompted, type the Administrator password. If the administrator password is blank, just press ENTER.

  • A command prompt will open
Type fixmbr and press enter. If you get a warning about non-standard or corrupt MBR, just continue. Do NOT continue in case you use drive encryption!

Type exit and press enter to restart your computer. Let me know what happens.

regards, Elise


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#11 chrisvan

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Posted 12 February 2011 - 02:39 PM

It keeps telling me it couldn't complete it and to make it a slower speed. I turned it down all the way and it still wouldn't complete it.

#12 Elise

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Posted 12 February 2011 - 03:58 PM

Can you try this from another computer?

regards, Elise


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#13 chrisvan

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Posted 12 February 2011 - 05:08 PM

I'm trying it from my laptop but I think its the disc so I'm gonna go get another one from the store. I do have a flash drive now though.

#14 chrisvan

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Posted 12 February 2011 - 09:10 PM

It tells me selected boot device not available.

Edited by chrisvan, 12 February 2011 - 10:43 PM.


#15 chrisvan

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Posted 12 February 2011 - 10:48 PM

It still tells me selected boot device not available. I have even put the driver to the top on the setup like you said to do.




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