Holy fucking run-on sentence...:ugh:
Charlie, if that's for a list of tasks / skills / duties, break it up into at least two separate bullet points. Maybe three.
UPDATE: Assuming it's for a list, here's what I'd do:
• Hardware and software support for enterprise environment:
° Installation and troubleshooting of new and existing hardware.
° Installation and technical support for end-user software.
° System maintenance and technical support for Department of Mental Health servers.