Azure,
Moving the RAM from one slot to another does not "Toast" the warranty. If you have a problem, move the RAM back to the original slot and claim Warranty, since the comp is not working properly.
If the new comp is faster than the old comp, then I would look at getting that computer going first, before going back to the old computer.
As for the old computer, what are the specs? (CPU, RAM, HD, etc.)
Take Care,
Richard
P.S. Do not want to see you installing WinXP on a computer that cannot handle it.
