Memturbo-PC Optimizer has shown up on my computer. It seems to have shown up when I was mistakenly downloading Sammsoft Advanced Registry Optimizer 2010 when I thought I was downloading Malwarebytes. Cleared that up with Samsoft and downloaded Malwarebytes properly. I've run Zone Alarm and Malwarebytes with no luck, as well as MS' Add/Remove program.
Was able to finally delete Memturbo from my system by going to CTL+ALT+DEL, then 'Processes,' finding Memturbo and canceling the run process. Then was able to delete using Add/Remove utility. Not really computer literate and had forgotten about this approach, especially when initial attempts using Add/Remove kept saying the program was running and to end that session before Add/Remove utility could delete it. Just stumbled across the solution and computer running fine now.