windows 7 invalid partition table

[topcat123]

can any one help me with this problem i keep getting this error message - Invalid partition table. i'm using windows 7 on my kids pc, and last night they told me that the computer could not boot up into windows,when i tried to run the windows 7 disk i first of all when into the bios and changed it to boot up from cd rom. but all i keep getting is this error message - CD boot - cannot boot from cd - code 5, invalid partition table. if possible i would like to be able to save all the files that are on there, but if that's not possible i need to know how to boot up to be able to re format hard drive and start over. any help would be greatly appreciated thanks.

 

[topcat123]

thanks for the replies, i tried deanolfc's suggestion i watched the video link, i got the window 7 32bit recovery disk, i used the usb stick but it did not work it came up with the same error. any other suggestions would be apprecaited.

 

[topcat123]

thanks to everyone i eventually removed the hard drive, and mounted it to another computer and backed up all the stuff that i needed. used xp pro to boot up and then over-rite with windows 7. just about to remove the xp pro old window, thanks for all the advice