My computer has been infected with an unknown virus.Format doesn't help, Avast!,Avg, Bit Defender,G-data cannot remove this virus, because of it my computers performace gets to 100%(i hawe a 3.06ghz dual processor and 1gb ram) sometimes a windows.dll loads and then the performance gets even worse i cannot connect to internet,and the blue screens of death are killing me.i dont know what to do, im thinking of buying a new hdd but im affraid that it wont help what should i do???

If a full format doesn't get rid of a virus it must be coming from another source. The BIOS could be infected, a different partition or recovery partition, a thumb drive, another computer connected to your network.

What motherboard do you have? Some current boards come with a BIOS recovery function.

Why not slow down a bit and explain exactly what is happening and what you have tried to fix the issues!

If there are errors then post the exact error message!

If there is a pop up about something missing then exactly what does it say!

well every antivirus found the same viruses, (something like Win32:Virut) and on every windows reinstall these viruses somehow regenerate again and infect the same files

First off. No program/virus/malware or anything can jump across drives orpartitions unless they are openly shared....What this means is that your reformatting and reinstallations are going fine but you are continuing to use some partition or external drive or you have backed up the virus and are then reinstalling it after the reformat and reinstallation of your operating sytem.

This particular virus is a parasite that attaches itself to .exe type files....this means any saved program installations that you have stored in your computer is probably infected and you keep reinstalling it when you reinstall the programs.

My suggestion on this is to trash all of them and any backups that have any .exe files in them. If you have to have these programs then either download new copies from the homesite or use only the CD installation to reinstall them....you can use the same serial or licensing numbers, just don't use the saved installations,,,,this also means your anti virus programs as well!.......Note****this virus does not depend on the opening of the .exe files in order to reinfect...just the presense of the infected file is enough to reinfect all the other .exe files

I don't believe that this virus can infect a restore partition ( where your reinstallation set up is stored on a hidden partition on the harddrive). So your reinfection has to be from another source....something that you are reinstalling after the formatting or transfering through a shared infected partition or harddrive from another computer.

There is a series of things that you can do to maybe get rid of it but is too long for here so I will refer you to another website dealing with this particular virus for removal....

AumHa Forums

They are a bit complicated to follow the instructions...so good luck!

Trend Micro

If you are not a Trend Micro customer download the following file.

Sysclean Package: 3.3MB
MD5 checksum: ed35ecf2f141209963ae5b00b1cb2b8b

NOTE: For instructions on how to use this package, consult the "How to Use" section of the readme file, readme_sysclean.txt. This file also contains the description and the different features of this package.

Note that for the Trend Micro Sysclean Package to be effective, you must download and place the latest pattern file in the same folder as the Trend Micro Sysclean Package.

You will also need to download and drop into the same folder as the sysclean.com file is in, the latest pattern files.

Trend Micro

Virus Pattern File (Controlled Pattern Release) - 5.110.07
Spyware Pattern File (Controlled Pattern Release) - 0.582.25

Set up sysclean in c:\sysclean ... open folder and use the sysclean.com file to begin the process... It will take quite some time, depending on the size of your drive and the number of files on it...maybe an hour...so watch som TV in the interim.