Uninstalling one Operating system installed over another one

[Guest]

How can I uninstall Windows XP Pro from my computer? It came with Windows XP
Home edition and my nephew installed Pro over it but Pro did not go to the C
drive it went to the D drive which doesn't have enough memory to support it.
Now my computer freezes all the time and keeps telling me my memory is low to
remove programs to free up space....this is very annoying. I want to restore
my computer back to it's original operating system without loosing my data.
Is this possible?

 

[Ken Blake, MVP]

How can I uninstall Windows XP Pro from my computer? It came with
Windows XP Home edition and my nephew installed Pro over it but Pro
did not go to the C drive it went to the D drive which doesn't have
enough memory to support it. Now my computer freezes all the time and
keeps telling me my memory is low to remove programs to free up
space....this is very annoying. I want to restore my computer back
to it's original operating system without loosing my data. Is this
possible?

No, it's not possible.

However it is possible that your nephew did not install Pro over Home, but
installed it next to Home on Drive D. Check on C: to see if XP Home is still
there.

Also note that you are mixing up "memory" with disk space. It's disk space
that you are low of on D:. not memory.