Solved Error loading OS after Trojan removed

July 24, 2013 at 01:20:28
Specs: Windows 7
Hi all,
I used Windows Defender to remove Trojan:DOS/Alureon.M and, when attempting to restart, get "error loading operating system" in DOS text. All BIOS tests are normal (memory, disk). F8 doesn't work to get to anything. Windows 7 came pre-loaded on HP notebook G60-63OUS, so no disks. Did burn a recovery disk when computer was new, but hope to fix this problem without losing a lot of stuff.
Any insight would be greatly appreciated!

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✔ Best Answer
July 24, 2013 at 12:53:02
Thanks for all the replies. What I did was create a system repair disk on another Win 7 notebook and ran system restore. That didn't work, but I remembered reading somewhere that this Trojan could have also affected the Master Boot Record, and that seemed to fit, so used the repair disk to get to a system prompt and ran Bootrec.exe /FixMbr. Restarted, and FIXED! Don't know if the system restore changed anything at all, but everything's just fine now.
Thanks again!


#1
July 24, 2013 at 03:20:15
"hope to fix this problem without losing a lot of stuff"

Well that's why it's always advisable to keep backups of your data on a different drive or on optical disks. One day the hard drive will fail and what then? It's so easy these days to keep backups of your data now that external hard drives are reasonably priced

You can remove the hard drive and install it as a second drive in another computer. Retrieve your data from it and save it to optical discs or an external hard drive. Then put your hard drive back and use your recovery discs to re-install Windows on it.


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#2
July 24, 2013 at 03:28:32
phil22 just beat me to it.

"I used Windows Defender to remove Trojan:DOS/Alureon.M"
Once you slave the notebook drive, could you Copy & Paste the contents of the Windows Defender log in your next post please.

Notebook / Netbook / Laptop Hard Drive to Desktop Adapter (2.5" to 3.5")
http://www.geeks.com/products.asp?c...
http://www.geeks.com/details.asp?in...
http://insidecomputer.stores.yahoo....
http://cgi.ebay.com/ws/eBayISAPI.dl...


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#3
July 24, 2013 at 06:13:20
"Windows 7 came pre-loaded on HP notebook G60-63OUS, so no disks"

You should have created the disks (usually 6-7 DVDs) the day you bought the notebook. It's all explained in the documentation (which no one ever reads). See the following:

http://h10025.www1.hp.com/ewfrf/wc/...

http://h10032.www1.hp.com/ctg/Manua...


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#4
July 24, 2013 at 12:53:02
✔ Best Answer
Thanks for all the replies. What I did was create a system repair disk on another Win 7 notebook and ran system restore. That didn't work, but I remembered reading somewhere that this Trojan could have also affected the Master Boot Record, and that seemed to fit, so used the repair disk to get to a system prompt and ran Bootrec.exe /FixMbr. Restarted, and FIXED! Don't know if the system restore changed anything at all, but everything's just fine now.
Thanks again!

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#5
July 24, 2013 at 16:13:10
"Don't know if the system restore changed anything at all, but everything's just fine now"
If you want to check if anything is still lurking, could you Copy & Paste the contents of the Windows Defender log that removed the trojan, in your next post please.

Then run Windows Defender again.

I suspect we will need to run other programs to check for leftovers.


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#6
July 24, 2013 at 16:20:35
Glad to hear you got it running. I would have recommended the repair disk and System Restore and if needed, a Start Up Repair from it.

Download, Install, Update, and Run Malwarebytes as a double check to see if there are any left overs still there just waiting to slam you again.

Others may have other suggestions as well.

Make sure that you make a back up of your files, and possibly an image of the drive as well (if you use Windows Back up, the iamge can be restored from the repair disk as well).

You have to be a little bit crazy to keep you from going insane.


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#7
July 28, 2013 at 08:57:18
I've run Norton, Defender and Security Scan and so far, so good. I will download and run Malwarebytes as well. As soon as I'm satisfied that it's completely gone, I will back up everything.
Thanks to all of you who replied!

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