My son's pc has a virus. On startup, we get a message saying that the pc is infected with worm.win32.netsky. Also, an icon (red circle with a cross in it) comes up in the system tray telling me to click it to download a virus checker. It does a free scan and reports dozens of serious and critical threats, then asks you to buy the tool. I tried doing scans in safe mode, but to no avail. Worse still, I cannot connect to any internet site (keeps saying page could not be found), I cannot do CTRL-ALT-DEL (a message keeps telling me it has been disabled my the administrator, ditto REGEDIT.
I have looked for a solution on here, but they all suggest downloading tools, which I can't do as this virus seems to have disabled me getting on the net.
One other thing, when windows did its pre-bootup scan it detected an infected file called ufxw.exe, which I deleted. I cannot find any info on this file. What is it, and have I done any harm to the running of the pc by deleting it?
The pc in question is running Windows XP. Can someone please offer some help on how I can get the pc cleaned up (especially as so many features have been disabled)? If your suggestions include downloading software, please advise if they can be downloaded on my laptop to a memory stick and transferred to the infected pc.