Well...that's not so easy
Your XP boot files...have been replaced by your Win 7 boot files, they supercede the XP boot files when there is a dual-boot and Win 7 is the addition. Proof of this is the fact that your boot options refer to the XP install as "original windows" or something similar.
If the Win 7 boot files have a problem with your XP install...you will have to go to the Win 7 forum to find out how to overcome that.
On the other hand...the messages you say that you received when you got home yesterday...indicate a possibly weak CMOS battery, IMO. Typically when the battery gets weak and needs to be replaced...things start going wrong with the system that are hard to understand. Typically, the BIOS will revert to the default boot options, which...in many cases...will be to boot from the network. This happens without the user manually changing anything in the BIOS.
Asssuming that this is a desktop...I would suggest that you spend the small sum that a replacement CMOS battery costs (less than $5) and replace the one currently in your system. I do not guarantee that this is your problem or that it will cure/change anything...it's merely what I would do.
If you actually change the battery (series 2032, available anywhere these days that sells electronic/watch/camera batteries), be sure to put it back in with the same side reflected as the current battery.
CMOS Battery Replacement - http://www.liverepair.com/encyclopedia/art...cmosreplace.asp More Info on Changing CMOS Battery
Ignore any instructions that you read which say to write down settings...that used to be required, should not be required now. After replacing the batter, you will need to go into the BIOS...reset the data/time if it incorrect, check your boot options (make hard drive the first option)...then save the changes made by hitting F10. That will also reboot the system.
In short...I don't think there is anything at all wrong with your installs...just a failing battery which happens to be a key component of every system.
Someone else may think differently and I could be wrong.