If you cannot boot up in Normal or Safe mode, you may be able to use a Windows XP bootable Floppy Disk
to boot from a diskette instead of your hard drive. If your hard drive's boot sector or Windows' basic boot files have been corrupted, this disk will circumvent the problem and boot you into Windows. If you don't have an emergency boot floppy, you may be able to use one created on another PC running Windows XP but there's no guarantee that it will boot your machine.
"Resolving Boot Issues with a Boot Floppy Disk
"How to obtain Windows XP Setup boot disks
" and select the download that's appropriate for your Operating System. The Setup boot disks are available so that you can run the Setup program on computers that cannot use a bootable CD-ROM.
Another option is to create a Bootable CD:Bart's way to create bootable CD-RomsHiren's BootCDUltimate Boot CDEzReload Bootable CDWindows and DOS Boot DisksHow to write a CD/DVD image or ISOCreating A Windows XP Recovery Console CD Image
You can try doing a "Repair Install with Recovery Console
". The Recovery Console is a Windows utility that provides a DOS-like command line from which you can run some repair programs. If you have a Microsoft Windows CD-ROM, you can get to the Recovery Console by booting from that CD and pressing any key when you told to 'Press any key to boot from CD'. At the 'Welcome to Setup' screen, press r
"Langa Letter: XP's No-Reformat, Nondestructive Total-Rebuild Option
"How to install and use the Windows XP Recovery Console
"How to recover from a corrupted registry that prevents Windows XP from starting
If you don't have your XP CD you can download an ISO of the Recovery Console files:NTFS4FreeDos ISORecovery Console ISO fileXP Recovery Console zip file
Burn it as an image to a disk to get a bootable CD which will startup the Recovery Console for troubleshooting and fixing purposes. This is especially useful for those with OEM systems with factory restore partitions or disks but no original installation CD. If you are not sure how to burn an image, please read How to write a CD/DVD image or ISO
: You should know that some types of malware can result in a system so badly damaged that a Repair Install will NOT help!
. Reinstalling Windows without first wiping the entire hard drive with a repartition and/or format will not remove the infection. The reinstall will only overwrite the Windows files. Any malware on the system will still be there afterwards. Starting over, reformatting the drive and performing a clean install of the OS removes everything and is the safest action