I'd not recommend running any repair tools on this drive if you have important data that you need to recover which isn't backed up. This time using Acronis True Image as mentioned before to make a backup of the HD for future disaster recovery. Since you got that error of 'No File System' then as suspected the partition table has been damaged and without a backup of it you are into a complex manual repair that isn't guaranteed to work and may even make things worse - FixMBR only works for single partitioned drives, not multi-boot ones !! Time to recover what data you can from this drive - assuming you don't have backups - then wipe it and start all over again.

Nversion software will most likely warn you that the FAT32 partition is damaged and recommend sorting that out first. Well worth the small outlay for Acronis IMHO !! FWIW - don't attempt converting a screwed FAT32 partition to NTFS as it will make a bad situation worse, though the co Sorry to say it but this is one time when recovering what data you can and starting all over again is probably the least hassle option but for future reference anyone using more than a single boot system would be well advised using image backup software such as Acronis True Image to take a full snapshot of the boot drive which will include the MBR and make restoring back to fully working (at the time the image was taken) a breeze. You can try disc repair software from the manufacturer of the Hard Drive but even then you would be lucky to restore this triple boot system back to fully working. If you don't have a backup of the MBR then on a multi-boot system it's a royal pain to reconstruct manually though it can be done. Sounds like HD corruption and possibly the MBR and / or partition table is hosed.

Testdisk windows xp