Aurora R11, pump fan critical failure

Hi all,
My Alienware Aurora r11 has finally come victim to the Critical Fan failure, i have got it to boot a couple times after mucking around with it, but i think it is time to let it go and get a new aio, i was wondering if anyone had some suggestions of good working aios (that wont break the bank) and what i would need to do to get it to work!

Thank you!!