System settings for a hardcore gaming computer

Go to Start Menu -> Run -> Services.msc
and press Enter...

Then from the services list thus opened, set all these services to MANUAL by right clicking on them one by one and clicking Properties...

• Routing and Remote Access
  
• Alerter
  
• Application Layer Gateway Service** (only if firewall is not used)
  
• Application Management
  
• Background Intelligent Transfer Service
  
• ClipBook
  
• COM+ System Application
  
• Distributed Link Tracking Client
  
• Distributed Transaction Coordinator
  
• Help and Support
  
• IMAPI CD-Burning COM Service** (only if do you not use the cd-rw xp record suport)
  
• IPSEC Services
  
• Logical Disk Manager Administrative Service
  
• MS Software Shadow Copy Provider
  
• Net Logon
  
• NetMeeting Remote Desktop Sharing
  
• Network DDE
  
• Network DDE DSDM
  
• Network Location Awareness (NLA)
  
• NT LM Security Support Provider
  
• Performance Logs and Alerts
  
• Portable Media Serial Number
  
• QoS RSVP
  
• Remote Desktop Help Session Manager
  
• Remote Procedure Call (RPC) Locator
  
• Remote Registry
  
• Removable Storage
  
• Server
  
• Smart Card
  
• Smart Card Helper
  
• SSDP Discovery Service
  
• System Restore Service
  
• Telnet
  
• Themes
  
• Uninterruptible Power Supply
  
• Universal Plug and Play Device Host
  
• Volume Shadow Copy
  
• Windows Image Acquisition (WIA)
  
• Windows Installer
  
• Windows Management Instrumentation Driver Extensions
  
• Wireless Zero Configuration
  
• WMI Performance Adapter
  
• Fast User Switching Compatibility ** (only if fast user shiching is not used or the machine have one user only)
  
• Protected Storage
  
• Windows Time
  
• TCP/IP NetBIOS Helper
  
• Task Scheduler
  
• Secondary Logon
  
• Print Spooler ** (only if the pc do not have or use a printer)
  
• Indexing Service
  
• Error Reporting Service
  
• Computer Browser
  
• Internet Connection Firewall (ICF) / Internet Connection Sharing (ICS)