First, system service optimization point "start - run" /or press Win + R button to call out the run dialog. Enter “services.msc” Listed below as disabled items ● Windows Time maintains time and date synchronization for all clients and servers on the network. If this service is stopped, the synchronization of time and date will not be available. If this service is disabled, any services that explicitly depend on it will not be able to start. ● Tablet PC Input Service Enables Tablet PC pen and ink features ● Windows Defender scans your computer for potentially unwanted software, sets up scans, and gets the latest software definitions that may not be needed. ● Telephony provides Telephony API (TAPI) support so that each program controls the telephony device on the local computer and the devices on the server that is running the service over the LAN. This item is required to set up an ADSL connection or other network that relies on a telephone line. It can be disabled by using a route or not using a telephone line. ● Remote Access Connection Manager manages dial-up and virtual private network (VPN) connections from this computer to the Internet or other remote networks. If the service is disabled, any services that explicitly depend on the service will not be able to start. ● Diagnostic System Host Diagnostic System Host Service enables problem detection, troubleshooting, and resolution for Windows components. If you stop the service, some diagnostics will no longer work. If the service is disabled, all services that explicitly depend on it will fail to start. ● SSDP Discovery discovered network devices and services that use the SSDP discovery protocol, such as UPnP devices. SSDP devices and services running on the local computer are also announced. If you stop this service, SSDP-based devices will not be discovered. If this service is disabled, any services that depend explicitly on it will not be able to start. ● Computer Browser maintains an updated list of computers on the network and provides a list to the computer to specify browsing. If the service is stopped, the list will not be updated or maintained. If the service is disabled, any services that depend directly on this service will not be able to start. The list of network neighbor computers needs to be supported by this project. If you do not use or are used to directly use IP on the computer on the network, you can disable this item. Base Filtering Engine The Basic Filtering Engine (BFE) is a service that manages firewall and Internet Protocol security (IPsec) policies and implements user mode filtering. Stopping or disabling the BFE service will greatly reduce the security of the system. It will also cause unpredictable behavior in IPsec management and firewall applications. ● IPsec Policy Agent Internet Protocol Security (IPSec) supports network-level peer-to-peer authentication, data raw authentication, data integrity, data confidentiality (encryption), and replay protection. This service enforces IPSec policies created through the IP Security Policy snap-in or the command-line tool "netsh ipsec". When you stop this service, you may experience network connectivity issues if your policy requires a connection to use IPSec. Similarly, remote management of Windows Firewall is no longer available when this service is stopped. ● Windows Firewall Windows Firewall helps protect your computer by preventing unauthorized users from accessing your computer over the Internet or the network. ● IKE and AuthIP IPsec Keying Modules The IKEEXT service hosts Internet Key Exchange (IKE) and Authentication Internet Protocol (AuthIP) keying modules. These keying modules are used for authentication and key exchange in Internet Protocol Security (IPSec). Stopping or disabling the IKEEXT service will disable IKE/AuthIP key exchange with peer computers. IPSec is usually configured to use IKE or AuthIP, so stopping or disabling the IKEEXT service will cause IPSec failure and compromise the security of the system. It is highly recommended to run the IKEEXT service. ● Security Center monitors system security settings and configuration. ● Superfetch maintains and improves system performance over time. ● Network Connections manages the objects in the "Network and Dial-up Connections" folder where you can view LAN and remote connections. You can disable this by using the route to the Internet and the network is set up. ● The DHCP Client registers and updates the IP address for this computer. If this service is stopped, the computer will not be able to receive dynamic IP addresses and DNS updates. If this service is disabled, all services that explicitly depend on it will not be able to start