dual boot problem

[edward chin]

I have an HP dc7700-SFF running winXP. About 2yrs ago I installed
Ubuntu 8.10 as a dual boot. After 8.10 was installed, there was a
notification that a newer version 9.04 was available. So, I continued
with the upgrade. The notice that the install was complete came up. I
started the reboot and removed the intall disk.  Then came the message
about no bootable medium. No grub - no boot. I restored the MBR and
got winxp back.
Last week I decided to try an Ubuntu dual boot again. This time 10.10.
All went well, and when the install was complete, I decided not to
update until I could confirm the dual boot. I shut down, removed the
disk and waited for the reboot.
It openeded into grub; I chose Ubuntu 10.10 and everything came up
nicely. I updated everything and installed my fav apps. I shudown and
rebooted. Grub came up again, and I was happy that grub was working.
So. I selected winxp to ensure that it was working. It worked - great.
I exited windows and shut down. However, when I started again, I got
the message:

no module name found
Aborted. Press any key to exit

What happened? How do I fix this? I've done dual boots in the past and
all have worked. My only two failures have been with this box. Could
it be something with the box? I've done dual boot with winxp on
another box and winxp with ubuntu 10.10 on a laptop.

TIA for any help,
Ed Chin
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