Windows 7 services unexpectedly started in Manual mode

hi Windows 7 folks

as i intend to load run a few large virtual machines on my Windows 7 laptop with only 4 GB memory, i am trying to optimise Windows by stopping those unnecessary Windows services to free up more memory. by default, Windows 7 occupies 1.5 GB memory after a restart, before loading any other applications. in the XP age on the same computer, only less than 400 MB memory was used, accordingly.

i notice that some Windows services, as listed below, are still started even i have changed their Start Type to Manual.

* Application Experience
* Background Intelligent Transfer Service
* Server
* SSDP Discovery
* TCP/IP NetBIOS Helper

as shown in the Dependencies tab of these services' Properties, there are no loaded system components depending on these services. moreover, it seems neither item listed under the Startup options of MSCONFIG is associated with these services. therefore, i am curious about how these services are started.

FYI - all started services are listed in the Code section.

any clues? thanks in advance.

regards,
bbao

These Windows services are started:

   ActivIdentity Shared Store Service
   Andrea ADI Filters Service
   Background Intelligent Transfer Service
   Base Filtering Engine
   Bluetooth Support Service
   Certificate Propagation
   CNG Key Isolation
   COM+ Event System
   Com4QLBEx
   Cryptographic Services
   DCOM Server Process Launcher
   Desktop Window Manager Session Manager
   DHCP Client
   DNS Client
   Extensible Authentication Protocol
   Forefront Identity Manager Password Reset Client Service
   Group Policy Client
   Health Key and Certificate Management
   HP Service
   HPCA MSI Redirector
   HPCA Notify Daemon
   HPCA Scheduler Daemon
   hpqwmiex
   IKE and AuthIP IPsec Keying Modules
   Intel(R) Matrix Storage Event Monitor
   IPsec Policy Agent
   Multimedia Class Scheduler
   Net Driver HPZ12
   Netlogon
   Network Access Protection Agent
   Network Connections
   Network List Service
   Network Location Awareness
   Network Store Interface Service
   Plug and Play
   Pml Driver HPZ12
   Power
   Print Spooler
   Program Compatibility Assistant Service
   Remote Procedure Call (RPC)
   RPC Endpoint Mapper
   SafeBoot Client Manager
   Security Accounts Manager
   Security Center
   Server
   Shell Hardware Detection
   Smart Card
   SSDP Discovery
   Superfetch
   System Event Notification Service
   Task Scheduler
   TCP/IP NetBIOS Helper
   Themes
   User Profile Service
   VMware Authorization Service
   VMware DHCP Service
   VMware NAT Service
   VMware USB Arbitration Service
   Windows Audio
   Windows Audio Endpoint Builder
   Windows Defender
   Windows Driver Foundation - User-mode Driver Framework
   Windows Event Log
   Windows Firewall
   Windows Font Cache Service
   Windows Management Instrumentation
   Windows Search
   Windows Time
   WinHTTP Web Proxy Auto-Discovery Service
   WLAN AutoConfig
   Workstation
   WWAN AutoConfig

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