Try System Recovery First Restart your computer, and then press F8 during the initial startup of Windows XP and you will get the option to Start in Safe Mode 1. Log on to Windows as Administrator or your User ID. 2. Click Start, point to All Programs, point to Accessories, point to System Tools, and then click System Restore. System Restore starts. 3. On the Welcome to System Restore page, click Restore my computer to an earlier time (if it is not already selected), and then click Next. 4. On the Select a Restore Point page, click the most recent system checkpoint in the On this list, click a restore point list, and then click Next. A System Restore message may appear that lists configuration changes that System Restore will make. Click OK. 5. On the Confirm Restore Point Selection page, click Next. System Restore restores the previous Windows XP configuration, and then restarts the computer. 6. Log on to the computer as Administrator. The System Restore Restoration Complete page appears. 7. Click OK. If Your Windows XP does not bootup in Safe Mode than try this Start the System Restore tool at a command prompt 1. Restart your computer, and then press F8 again during the initial startup of Windows XP this time select in Safe Mode with a command prompt. 2. Log on to your computer with an administrator account or with an account that has administrator credentials. 3. Type the following command at a command prompt, and then press ENTER: %systemroot%system32restorerstrui.exe 4. Follow the instructions that appear on the screen to restore your computer to an earlier state. and If this works and you have windows XP loaded. Just to be safe go here. http://www.microsoft.com/athome/security/spyware/software/default.mspx That will allow to download the #1 AntiSpyware remover which Microsoft Recently Aquired from Giant Company. Let the program scan your system for malicious software. And once that is done I would also recommend going to http://housecall.trendmicro.com/ and scan for virus's