when i bootup it says invalid boot.ini booting from c windows.
how can i fix this?

The Boot.ini file is a hidden system file off the root of your harddrive. Your boot.ini is probable missing or contains invalid entries. A boot.ini for Windows XP that boots from a single primary partition would look similiar to this.. . (Use notepad to create\edit it)


[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S

[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect

Depending on your os, you can use the Recovery console or use step by step confirmation. You can then check your Bootlog file for errors.

If you post back with your os, then someone here will be able to tell you the contents which you can follow as posted above.

Oh, BTW, you wouldn't be dual booting would you?

xp pro and i am not dual booting.
thanks.

THIS (http://support.microsoft.com/default.aspx?scid=kb;en-us;291980) link shows how to use the bootcfg command in M$ XP's Recovery Console that repairs or adds if missing the Boot.ini file.