Sorry to resurrect this oldish thread but it applies to my set up.
I run XP off Drive#1 installed first and used for over 2 years. A month or so ago I installed Win7 on Drive #2 (retail version - fresh install - not upgrade). During the post routine I get a choice to boot Win 7 or 'an earlier version of Windows'. As most of my active stuff is still on XP I use the arrow key to choose the earlier version. This all worked perfectly until a few days ago.
Now when I try to select the 'earlier version of Windows' the arrow up key does nothing and after 30 secs the system boots up in Win7. I have tried Num Lock on and off, Page Up, without success. I have tried F8 during the sequence - no response. I cannot even get into the BIOS (Delete during boot).
I am at a loss what to do now. Can anyone help?
Thanks
John