1. Rkill - Repair Tool of the Week:
The malware world is changing. It?s getting smarter.
In fact, some infections will detect that you have launched an anti-malware tool such as MalwareBytes and close it down as soon as you open it, which makes your job much harder. This is the exact situation Rkill is designed for.
Rkill is a small, freeware and portable tool designed to terminate active malware processes allowing you to use other removal tools. Rkill is made by a Microsoft MVP ?Lawrence Abrams? and is available in 4 different extensions. An .EXE, .COM, .SCR and a .PIF file.
The reason why Rkill comes in 4 different versions is because some malware will block .EXE files in an attempt to prevent you from running other malware removal tools, so this gets around that problem.
2. The article  describes how to disable common startup programs, settings, and drivers to troubleshoot issues that is known as clean booting when logged on as an administrator or a member of the Administrators group.
Since you probably cannot connect to the Web and read the article, here is a partial excerpt of what to do before running any of the antiviral programs:
To manually start Windows XP with a clean boot, follow these steps:
Step 1: Start the System Configuration Utility
Click Start, click Run, type msconfig, and then click OK.
The System Configuration Utility dialog box is displayed.
Step 2: Configure selective startup options
In the System Configuration Utility dialog box, click the General tab, and then click Selective Startup.
Click to clear the Process SYSTEM.INI File check box.
Click to clear the Process WIN.INI File check box.
Click to clear the Load Startup Items check box. Verify that Load System Services and Use Original BOOT.INI are checked.
Click the Services tab.
Click to select the Hide All Microsoft Services check box.
Click Disable All, and then click OK.
When you are prompted, click Restart to restart the computer.
Step 3: Log on to Windows
If you are prompted, log on to Windows.
When you receive the following message, click to select the Don't show this message or launch the System Configuration Utility when Windows start check box, and then click OK.