I used my PC this morning with no trouble at all, browsed ebay for a while then turned it off as normal and went to work.
Wife rings me at work saying when she switched on again later, that there is a boot up message about a missing NTLDR, and telling her to do a ctrl/alt/del.

I checked this message out on my internet connection at work, and came home expecting to have to replace various boot files from the CD.
However, before I did that I checked the BIOS, and found that my SATA boot drive was now down at number three in the boot order, I have two other IDE drives installed also.
I reset the drive back to number one in the list, and all seems OK again.

Thing is I would dearly like to know how/why that happened, could it be a virus ?, or do I need to look elsewhere.

Thanks
Phil