I've just reformatted my computer and NEED to reinstall Maple 11 ASAP,
assignments are due soon.
I am having trouble installing it

1st time Installing)

   Everything was alrite until my cd-drive went haywire and the installiation frooze
   i then ended the task (task manager), maple as far as i know created the folder 
  program files, a few files there but NO WORKING PROGRAM is there leading to my second attempt to reinstall

2nd time installing)

"Maple 11 already installed"
  confused i decided to explore maple 11 folder, attempt an uninstall
"This Application has Unexpectedly Quit"
So now i am at a loss, i've tried system restore, that has done nothing

I cannot Install or Uninstall, what should i do?