I have tried to start mongod.exe from my 2008 R2 server and im getting this error:
I CONTROL Hotfix kb2731284 or a later update is not installed, will zero-o
By just creating a folder structure like below in my "C:\" drive , i resolved the issue :=>
c:\data\db
Sometime it works without creating the above mentioned folder structure, i.e. MONGODB itself creates the same (as it worked for me in Windows 8 laptop) but sometimes it needs to be explicitly done (as i need to for my windows 7 installed desktop)
Also you can browse through the complete installation and connection process for MONGODB.