How to get rid of this virus

is this a fully updated version of McAfee you are running? if not you need to run another antivirus till you actually find what it is. Without knowing what virus it is it is very hard to help you solve this issue.

Try downloading Avast or Microsoft Security Essentials, both are two very good antiviruses and see if they can find the virus.

Good luck!

yes it is an updated mcafee....

Try with another antivirus then, preferably, boot the computer without any 3rd party software running but the antivirus and see if this helps. (run MSCONFIG and turn of all services exept the antivirus and see if that finds anything.

You should be using flash disinfector and usb-set.  This will disinfect your USB sticks and kill any autorun files that may be used as a vector.

Use Malwarebytes or Avast! to scan your computers.

I would recommend you to go through the articles from Younghv that would help you in getting rid of it completly. In short you would need to run Rogue Killer before MalwareBytes full system scan and post the logs here if the problem persists

https://www.experts-exchange.com/A_4922.html (Rogue-Killer-What-a-great-name)
https://www.experts-exchange.com/A_5124.html (Stop-the-Bleeding-First-Aid-for-Malware)
https://www.experts-exchange.com/A_1940.html (Basic Malware Troubleshooting)

I hope that would help.

Sudeep

Not to mention that you would also need to update the system with Microsoft windows update once you are finished cleaning the system.

this is the log file of combo fix
log.txt

also will this clean flash drives too?

CF had deleted some bad files there.
No it doesn't clean flashdrives, it only remove flash drive infections that are already in the system.

Try the flash_disinfector that tzucker posted, that removes flash drive infections also(hasn't been updated since combofix also started removing flashdrive infections) sUBs created both tools, other advantage of the Flash_disinfector is it will create bogus autorun.inf folder in each partition.

thanks a lot.....one other question....in our school all we have in terms of security is mc affee antivirus....

what do you all suggest? is that anti virus good enough or should we have other software on these machines

If McAfee is what's installed there now then I wouldn't suggest changing it till the subscription is due. Antiviruses are basically similar, some may have better detection than others but in terms of rogues none of them are effective.

If the McAfee installed is just an antivirus then you still need anti-malware unless it's a security suite.
The most effective anti-malware so far is MalwareBytes and it's cheap enough you can also get licenses for multiples machines.
http://www.malwarebytes.org/

I prefer ESET products myself.  I suggest to most users that they use ESET Smart Security.  Is is low maintenance, has a great admin interface, checks connected computers for windows updates as well as installing it's own firewall.  The updates are more frequent so they are smaller and in that way the ESET product takes up a lot less resources.

ESET http://www.eset.com/us/