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Download EasyBCD or EasyBCD Beta and use it to restore the XP Bootloader. You'll have to have .Net Framework 2.0 installed as well if you don't already have it.
Or use the Recovery Console to run the FIXMBR and FIXBOOT commands
To boot into the XP Recovery Console:
You may need to enter the BIOS and make sure the CD is set as the first boot device, or you might have a Boot Menu you can access with a key press when you start the PC. F12 is common.
When you boot from the CD, the following is displayed:
Press any key to boot from CD....
Press any key so it will boot from the CD.
Next on a black screen:
Setup is inspecting your computer's hardware configuration...
Screen turns Blue, and Windows Setup is displayed at the top.
at the bottom is displayed the following in sequence:
Press F6 if you need to install a third party SCSI or RAID driver
Press F2 to run Automated System Recovery (ASR)...
Setup is loading files (file names displayed)
Title changes to Windows XP Professional Setup
The options to setup or repair Windows are displayed
Choose To repair a Windows XP installation using recovery console, press R.
You may need to choose the Windows installation if you have a dual boot system
You will need to enter the Administrator password unless you previously disabled that requirement; if it's blank, just press enter.
This should leave you at a C:\Windows> prompt.
Type FIXMBR and press enter. You'll get a warning that the MBR is not a normal one, continue anyway.
Type FIXBOOT and press enter
Type Exit and press enter to reboot.
Download EasyBCD or EasyBCD Beta and use it to restore the XP Bootloader. You'll have to have .Net Framework 2.0 installed as well if you don't already have it.
Or use the Recovery Console to run the FIXMBR and FIXBOOT commands
To boot into the XP Recovery Console:
You may need to enter the BIOS and make sure the CD is set as the first boot device, or you might have a Boot Menu you can access with a key press when you start the PC. F12 is common.
When you boot from the CD, the following is displayed:
Press any key to boot from CD....
Press any key so it will boot from the CD.
Next on a black screen:
Setup is inspecting your computer's hardware configuration...
Screen turns Blue, and Windows Setup is displayed at the top.
at the bottom is displayed the following in sequence:
Press F6 if you need to install a third party SCSI or RAID driver
Press F2 to run Automated System Recovery (ASR)...
Setup is loading files (file names displayed)
Title changes to Windows XP Professional Setup
The options to setup or repair Windows are displayed
Choose To repair a Windows XP installation using recovery console, press R.
You may need to choose the Windows installation if you have a dual boot system
You will need to enter the Administrator password unless you previously disabled that requirement; if it's blank, just press enter.
This should leave you at a C:\Windows> prompt.
Type FIXMBR and press enter. You'll get a warning that the MBR is not a normal one, continue anyway.
Type FIXBOOT and press enter
Type Exit and press enter to reboot.