Question about installation. Please help. ASAP

My computer install SQL server express, when i try to develop my project, I found out there are some tools missing from this edition. So i try to upgrade to enterprise edition. I setup the enterprise edition, it saying i already have exist copy of SQL server. It does not allow to upgrade. So i try to uninstall the SQL server express and install the enterprise edition. After i install the enterprise edition, it missing all the server service. That's mean the program installed, but the service part is missing. Is there any way to get back those service?. Please help.

Moving to setup.

Mike