NTLDR is missing

1. Insert the Windows XP bootable CD into the computer.
2. When prompted to press any key to boot from the CD, press any key.
3. Once in the Windows XP setup menu press the "R" key to repair Windows.
4. Log into your Windows installation by pressing the "1" key and pressing enter.
5. You will then be prompted for your administrator password, enter that password.
6. Copy the below two files to the root directory of the primary hard disk. In the below example we are copying these files from the CD-ROM drive letter, which in this case is "e." This letter may be different on your computer.

copy e:\i386\ntldr c:\
copy e:\i386\ntdetect.com c:\

7. Once both of these files have been successfully copied, remove the CD from the computer and reboot.

 

You never finished your malware thread
http://forums.majorgeeks.com/showthread.php?t=220921

If this is the same computer
http://forums.majorgeeks.com/showthread.php?t=221097
and all you have

is a firewall than chances are good that you have numerous malware on your computer. You also never answered Rikky about what version of windows you are running. If you tried removing something and picked the wrong thing to remove, that could have caused your problem.

You need to finish the malware thread before you deal with any other problems.

Go here http://forums.majorgeeks.com/showthread.php?t=220921 first and point to this thread so the malware fighters can see all the problems. Also you need to post what version (with service packs) of windows you are running. Also post what sort of disks or images you have to use.

 

We can not know if you removed all the malware as you never attached the requested logs.