Normally you should start the services from the Services listing in Windows. This can be accessed from Start > Run > services.msc. Here you should look for services starting with 'QlikView'. Can you start the problematic service from here?
Be aware, that all the services should be started with the account which you set up during the installation of the QliKView Server. For example, all of the services I have running are started with a Windows user called 'QVService'
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