Product search stops randomly

Search function for products while creating tickets stops randomly on my system till I reboot my windows 7 professional system, using sql server express. I understand it is related to my instance of the system. My guess is SambaPos is using a windows service(/s) for search, which stops. which one? Is there a way to restart it without rebooting?

These are the only Services that SambaPOS depends on. If they fail, SambaPOS likely would not work at all …