Thread: Problem with my Windows XP with Service Pack 2

I have a serious and urgent problem with my computer. I am using Windows XP with Service Pack 2 and for a few days now, whenever I use my computer and browse on the Internet for a few minutes, Windows Firewall keeps alerting me about a serious threat to my computer. I have attached a screenshot to this email for your reference. The message indicates "Windows Security Alert - the firewall has detected activity of a harmful software - Trojan-Spy.Win32. GreenScreen with a security risk level of critical value." I am asked to click to enable protection, but the firewall is already activated and my antivirus program does not detect any such problem. When I click the 'Enable' button, a web page opens for me to download some antispyware utility. Also the error screen does not close and refuses to go away. I have to reboot the computer, but it comes up again after some time. How do I solve this problem? Please answer my email at the earliest. Thanks in advance.

Your system is infected with a trojan. The popup messages are fake even though they look very much like genuine Windows Firewall prompts. Their aim is to fool users into downloading another virus and opening ports to let hackers monitor your computer remotely. Do not click on any button. Instead, use the program Process Explorer to kill the application in the background. You will also notice that the Task Manager does not work. Download Process Explorer and run the program. Search for the virus program running in the background and antispyware program such as Lavasoft AdAware and update it. Boot into Safe Mode and follow these steps:

* Delete all temporary files on your system.

* Delete the system restore points.

* Delete any files with the word 'Greenscreen' on your system. Search for and destroy the files.

* Scan your computer and clean it using the antispyware program.

* Use HijackThis' to prevent the spyware from being installed again using registry values.

* Run a virus scan on your whole computer using a good antivirus program updated with the latest definitions.

* Disable any fields in 'Msconfig' that may allow untrusted programs to run.
Finally, restart your computer and check if all is fine.