How to erase this virus?

Hi,
Yesterday a friend of mine came to my place to drop him some music files into his usb. But into his usb, there were some other files, that he wasn’t able to recognise himself!
My pc started lagging, and therefore I was forced to do a reset.
When it opened, I formatted the usb just to be sure that no virus is on it, and then disaster started.
First of all, the antivirus starts and closes immediately. I’ve runned trojan remover 3 times , removed what was found but nothing… The virus is still here… And what do I mean? Internet Explorer windows pop-up every once in a while getting me into strange chinese sites.
In addition I can’t download many things from rapidshare (… when I press download firefox closes)! WinRar opens whatever it wants!
I’ve runned Eset Online Virusscan, and it found 10 viruses. I’ve made even a system recovery, but still nothing..
I have 2 hdds, and therefore if I must format them, I will lose all the important personal files of my.
So what to do? Back the files and format the hdds? Try another magical antivirus? or just get my pc done in a technician and get me ripped off?
Thanks for the instant response. I’m currently running MalwareByte’s Anti-Malware and then I will use the other software you recommended. I was surprised to see that it was successfully installed as I thought there was some kind of banlist to the files used :P

If you have to reformat you only have to do the hard drive with your OS on it. Viruses don’t attack data. I have two HDs and four partitions on my desktop: one for XP, one for Vista, one saved for Win7, and one for data. If/when I get malware that causes too much damage to repair I just reformat the infected partition and everything else is safe. But I still backup to another PC and DVDs frequently in case the second hd crashes.

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The Beerman says:

If you have to reformat you only have to do the hard drive with your OS on it. Viruses don’t attack data. I have two HDs and four partitions on my desktop: one for XP, one for Vista, one saved for Win7, and one for data. If/when I get malware that causes too much damage to repair I just reformat the infected partition and everything else is safe. But I still backup to another PC and DVDs frequently in case the second hd crashes.
References :

Johnny M says:

I don’t usually suggest this, but Windows Live One Care will fix you up!
References :

Disco stew says:

Here, i have specified 4 programs ( including dl links ). Those programs has been specially designed for REMOVAL ONLY of strong viruses and worms : http://www.ecuhq.com/download-links-f44/...

Antispyware would be ↓ ( all free ) :

♣ Malwarebytes AntiMalware
♣ SUPERAntiSpyware
♣ Spyware Terminator
♣ Ad-Aware SE
♣ Spybot Search & Destroy
♣ HijackThis

I`d give special intention to the first 3 programs listed.

How to set/configure SUPERAntiSpyware : http://www.ecuhq.com/tested-programs-how...

HijackThis removes malicious registry keys, pretty useful for final cleaning.

How to use HijackThis : http://www.ecuhq.com/tested-programs-how...

If that doesnt satisfy you, use ClamWin ( also free ).

All available at :

http://www.filehippo.com
http://www.download.com
http://www.softpedia.com

You could also try going back in time, using System Restore : http://www.ecuhq.com/tricks-f6/create-a-...

For your firewall what I recommend is,Pc tools Firewall plus or Zonealarm Firewall.

Pc Tools Firewall:http://download.cnet.com/pc-tool...

Zonealarm Firewall:http://download.cnet.com/zoneala...

To protect against keyloggers in the future I recommend using KeyScrambler Personal 2.4.
KeyScrambler Personal is a free plug-in for your Web browser that protects everything you type from keyloggers. It defeats keyloggers by encrypting your keystrokes at the keyboard driver level, deep within the operating system. When the encrypted keystrokes reach your browser, KeyScrambler then decrypts them so you see exactly the keys you’ve typed. Keyloggers can only record the encrypted keys, which are completely indecipherable. Unlike anti-virus and anti-spyware programs that depend on recognition to remove keyloggers that they know about, KeyScrambler will protect you from both known and unknown keyloggers. What’s more, KeyScrambler provides protection without getting in your way. You don’t have anything to learn about the program and you don’t have to do anything differently, but with KeyScrambler your important personal information will be a whole lot safer.

Look at a pic of keyscrambler.
http://www.inputsafe.com/screenshots/key...

Try Microsoft Windows Malicious Software Removal Tool.

Start>run>mrt & do a full scan.
References :

prr says:

Before you reformat, go to http://www.malwarebytes.org and d/l Malwarebytes. Update it and do a quick scan. After you are entirely clean, reboot and scan again to be sure.

FOr the future, be sure to run an antivirus and an antispyware. For the antivirus, go to http://www.download.com and search for one of these–AVG, AntiVir, or Avast. For antimalware, use either Windows Defender (free) or Malwarebytes (not free after 30 days, but better than Win Defender). Your pick.
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SeeYouLater_Zee says:

Try first Dr. Web LiveCD:
http://www.freedrweb.com/livecd/

And then I would try Malwarebytes’ Anti-Malware
http://www.malwarebytes.org/mbam.php
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