Reason analysis and solution of slow speed of computer internet

One, the user computer aspect

1. Computer Configuration

The higher the machine configuration, the more fluent the Internet is. The memory size, CPU frequency, hard disk speed and network card speed are the main reasons affecting the speed of Internet. Upgrade the machine configuration as much as possible, so that the Internet needs are guaranteed on the hardware.

2. Setting up the browser

⑴ reduce the add-in. Open IE Browser: Tools-Manage Add-ons, add-ons are programs that extend browser functionality, disable some add-ons, and speed up your browser loading

⑵ Set the browser home page to a blank page. Browser will not automatically load any page at startup

⑶ The multimedia option is canceled. Open Browser: Tools-Internet Options-advanced-Multimedia, remove unnecessary options, such as: Play the animation in the Web page, play the sound in the Web page, etc.

⑷ Close the Java script. Java and JavaScript are subroutines that run dynamically, and are commonly used for animating and rotating text. However, the operation of these programs will greatly affect the download speed. In IE browser, tools-Internet Options-security, in custom level, turn off the appropriate option.

3. Check the "process" loaded at startup

At "Start-" run, type MSCONFIG, "System Configuration Utility Window", click on the Startup items, these are user-installed utilities, such as MSN, antivirus software. Some programs do not need to start when the boot, in front of these programs do not tick, so that the boot loading process is much less, will be resources vacated, in order to achieve the purpose of improving speed.

4. Check the Open service

After installing Windows XP, many services are usually started by default, some of which are not available to ordinary users, not only for system resources, but also for hackers. In the run, type services.msc, open the service window, according to the actual needs of users can prohibit a lot of services, for general network users, it is recommended to prohibit the following services:

⑴application Layer Gateway Service If you do not use ICS and ICF software, you can turn off

⑵clipbook (Scrapbook) share the information in the scrapbook with other computers, which is generally not available at all

⑶computer Browser (Computer Browser) maintains an updated list of computers on the network

⑷fast User Switching compatibility provides management for applications requiring assistance under multiple users

⑸messenger Messenger Service

⑹ms software Shadow copy provider disk area Shadow Copy Service

⑺net logon general Personal computers are unlikely to be used in the login domain to censor this service

⑻network DDE (Network dde)

⑼netmeeting Remote Desktop Connection Sharing

⑽nt LM Security Support Provider (NTLM secure supporting provider)

⑾performance Logs and Alerts to prevent the remote computer from searching for data, it is strongly forbidden

⑿remote Desktop help Session Manager manage and control Remote Assistance

⒀remote Procedure Call (RPC) Locator Remote Procedure calls locator

⒁remote registry enables remote users to modify registry settings on this computer

⒂routing and remotely access (Routing and Remote Access) provides dial-up online-to-network or VPN services

⒃terminal Services allows multiple users to connect and control a single machine

⒄telnet allow remote users to log on to this computer and run programs

⒅TCP/IP NetBIOS Helper This can also be disabled for users who do not require file and print sharing

⒆portable Media Serial number re-obtains any music dial numbers via the online computer

⒇qos RSVP (QoS Admission Control, RSVP)

In addition to these 20 services, server (server) can also be banned if there is no file and print sharing.

5. Adjust your computer's performance options

Right-click My Computer, click Properties, point to Advanced options, performance-settings-visual effects, and select adjust for best performance.

6. Check for Trojans and viruses, clean up files

Check with Windows Cleanup Assistant or 360 defender for a Trojan horse, or open Task Manager to see if there are any unfamiliar processes. Scan your computer with the latest antivirus software. Clean up the temporary files, defragment the disk, and check the virtual memory size.

　Second, the network environment

Cause 1. Is it first clear that it is slow to visit a website, or is it slow to access all sites? If you only visit a website slowly, you should determine that the site server bandwidth is insufficient or the load is too large.

Cause 2. Is it related to the time period? Generally afternoon and evening, relative to the morning, the network speed is slower, because the Internet users more, occupy more bandwidth. If it's okay with the time period, there's another reason.

Cause 3. Check the network card and network cable. Nic is not loose, re-Plug and look after. Check the other end of the network cable, the connection with the port is loose? is the network cable in accordance with T 586A, t586b standard production? Try a different cable.

Cause 4. Check the network for a broadcast storm. Use network management software (such as sniffer) or Web monitor to see which machines in the network have large traffic and which machines have abnormal data traffic. Find this machine, unplug the network cable, the net is back to normal.

Cause 5. Determine if there is an external network attack? In addition to intranet broadcast storms, attacks from outside networks are also an important aspect of bandwidth. Using the network management software, you can determine whether the Internet is affected by the broadcast storm, or from external attacks.

Cause 6. Is there a network hardware failure? A variety of network devices (including network cards, hubs, switches, etc.), if not working properly, will trigger a large number of broadcast packets, when the number of broadcast packets reached 30%, the network transmission efficiency will be significantly reduced. Use network management software to check each hardware device.

Cause 7. There is a loop in the network. In the larger network, often there will be loops (loops), such as in the student dormitory or office and other public places, wiring is more cluttered situation, prone to loops, at this time, the computer sends every frame of information in the network channel repeatedly broadcast, resulting in broadcast storm phenomenon, eventually resulting in the LAN bandwidth is exhausted, Occurs when a time-out is intermittent. By grabbing the packet, you will find a large number of IP-flagged duplicate broadcast packets present. These large amounts of broadcast messages should not normally be caused by a host, but are repeatedly forwarded by the switch. The workaround is to troubleshoot ports by port until a network cable is unplugged.

Cause 8. Worm virus or ARP virus

Different virus damage range is not the same. Some viruses (panda burn incense, disk drive virus, etc.) can cause the computer to not work the other virus will emit many packets, greatly affecting the network, such as worms, arp viruses and so on. As a network management, you need to log on to the gateway switch frequently, look at the log or ARP table, if there is a Mac in the ARP table for multiple IP cases, then there is an ARP spoofing attack, and this Mac is the Mac that deceives the host. Disconnect the poison computer from the network and reduce the impact on the entire network. The poisoning of the computer recommended reloading system, and immediately install patches, anti-virus software, 360 security guards and other tools.

Now a variety of viruses continue to appear varieties, seriously affect our work and learning, so we want to improve the virus prevention awareness, prevention, to do: in a timely manner to upgrade the use of anti-virus software, timely installation of system patches, while uninstalling unnecessary services, not only improve the security of the system, but also improve the internet speed.