I installed SQL server 2008 r2 on Windows server 2008 and its working fine but it takes to much memory. So I decided to install sql server 2008 r2 express. I tried it couple times and all the time Im getting error after a while of installing 'User doesn't have permissions ..' I tried two times and its showing me two partially installed sql server instances.
I have 3 questions: How to uninstall those two sql server express instances? How to install properly sql server express instance? - Which user account I need to specify for running sqlserver instance?
Thank you for detailed answer