Oblivion Problems

ok,i used to play oblivion on my dads computer,and my mom just got a computer,so ipretty much brought oblivion to my moms house.I installed it fine,(and very fast if i say so myself:) )but then,when i go to play,it says that i need to debug it. how do i fix this?

Can you post the exact error message, or preferably, a screenshot of the error message?

Is your mum's computer powerful enough to run Oblivion? You need very high specs for it to actually work.
What are the specs of the new computer?