Ask me about computers! How to use the computer correctly to live a common sense!

Control Panel – Sound and Audio Properties – Sound.

Ninety percent is not poisoning!

You'll want to be a little more detailed about the computer. For example, in addition to turning on and off.

There is no sound when you put **.

And the little horn in the lower right, is it still there?

You turn it off and wait for a while before rebooting it, note that it is not a direct restart.

If not. First, check whether the sound card, cable, speakers and other devices are connected properly; It's good words.

You can open the Control Panel--- Add and Remove Programs--- Add and Remove Windows Components, put a check mark in front of "Accessories and Tools", click "Next", and then, shut down and restart, the system will prompt you to install new hardware, you just follow the prompts to install;

If this doesn't work, you right-click "My Computer" --Properties" --Hardware"--Device Manager", and open "Sound, ** and Game Controller" Is there a problem, that is, see if there is a yellow one in front? "If so, reinstall the driver for this device to solve the problem;

If none of the above fails, you will have to do the most thorough thing, uninstall the sound card driver, and install a new one.

That is, you have to use the motherboard driver again.

If you really don't want to use the motherboard disk of the year, there is also a way.

You first open the computer properties to see what model the motherboard is.

There seems to be a universal sound driver on the Internet, but it's best to find the same model.

Remember to uninstall before doing this.

In the future, remember not to smoke or plug in the speaker when using the computer, it is easy to lose part of the sound drive.

Here are some common senses about computer use:

1.Take care of your eyes: Prolonged computer use can cause eye strain, so you should take a break from your eyes every once in a while, or use glasses with radiation protection.

2.Clean your computer regularly: Dust accumulation in your computer will affect heat dissipation and operational efficiency, so you should clean the inside and outside of your computer regularly.

3.Install anti-virus software: There are various viruses and malware on the network, and you should install anti-virus software and a firewall to protect your computer.

4.Back up your data regularly: The files and data you want should be backed up to an external storage device to prevent data loss.

5.Avoid using pirated software: Using pirated software is not only illegal, but also can have various security risks, and you should buy genuine software or use free and open source software.

7.Learn commonly used shortcut keys: Mastering common shortcut keys can improve the efficiency of computer use, such as Ctrl+C copy, Ctrl+V paste, Alt+Tab to switch windows, etc.

8.Avoid using public Wi-Fi: Public Wi-Fi networks are not secure, easy to be hacked, and personal information is leaked.

10.Pay attention to personal privacy and security: protect your personal information, do not disclose personal information at will, pay attention to password security, and change your password regularly.

The reason for Huai grip to sum up, there are the following aspects, occasionally appearing, point: cancel, you can!

1.The computer has been hit by a Trojan horse or a virus is interfering!

Try: Antivirus, 360 Security Guard + 360 Antivirus Dual Engine Edition, or Kingsoft Guardian + Kingsoft Antivirus, suggestion: fix "high-risk" and "important" vulnerabilities!

Use "Trojan Cloud Scan" and "360 Antivirus", "Full Scan" and "Custom Scan" viruses and Trojans, remove them, and restart your computer!

After turning on the device, click on "Isolate|".Recover", find trojans and viruses and remove them completely!

2.If the first method doesn't work, open: "360 Security Guard", "Trojan Horse Killing": "360 System First Aid Kit"!

First "Start First Aid", after the investigation is completed, delete the "suspicious startup items" and Trojan horses, and then restart the computer!

Then click on the "File Recovery Area", find the "Suspicious Startup Items" and the Trojan, and click "Delete Files Completely"!

Then click "System Repair", "Select All", and then click "Repair Now"! Network Repair, Fix Now, Restart Your Computer!

3.With "360 Security Guard", "System Repair", one-click repair! Again: "Clean Plugins", Scan Now, Clean Up Now: Bad Review Plugins!

For the "latest version"!

QQ, or a variety of browsers, a variety of anti-virus software, a variety of online games Zhiming Shoot, etc.)! They are not "compatible" together, remove the "redundant" one!

6.How to uninstall: You can find "Force uninstall software from your computer" in the "Start" menu in the lower left corner of your computer, and find the excess one to uninstall! After unloading, "strong cleaning"!

Or "360 Security Guard", "Software Manager", click on, item 4: "Software Uninstall", click on, find.

Uninstall software to "redundant" and "similar"! Such as: "** device", click on, leave "storm", uninstall "fast broadcast"! Such as: "**": click on, leave "Thunder", uninstall "Express"! (Unload when you see it, don't unload the useful).

8.No more, restart the computer, press "F8" after booting, press "Enter", press Enter, enter the "Safe Mode", "Advanced Boot Options", find: "Last correct configuration", press down to try, see how it works!

9.No more, start menu, run, enter cmd, press enter, enter in the command prompt (copy it):

for %1 in (%windir%\system32\*.ocx) do regsvr32 /s %1

Paste, press Enter, and type:

for %1 in (%windir%\system32\*.dll) do /s %1

Enter! Until screen scrolling stops, restart your computer!

10.If you really can't do it, "one-click restore" the system or "reinstall the system"!

Netcom and Unicom are one family. They are all called network operators.

How many types of computer Internet access lines are there? --At present, there are mainly ADSL broadband (in our ADSL is mainly telecommunications, Tietong), Ethernet broadband (we are here Netcom, that is, Unicom, CITIC), optical fiber is generally only to the community, to the home is generally the enterprise, Ethernet broadband is characterized by no cat, network cable directly to the home, directly to the computer. ADSL broadband must be cats.

As for wired and wireless are relative to routers, they are generally used for home desktops and laptops to share Internet access, just use a wireless router, if it is a few desktop computers at home to share Internet access, then use a wired router.

Can another computer connect to two networks at the same time that are logically isolated from the Internet? --What do you mean is that a computer has Internet access and telecommunications, that is, one computer has two broadband connections at the same time, which is okay, but you need to add a router with two WAN interfaces, which is more expensive than ordinary routers.

1.Basically, there are just a few of them, and there are Gehua cables or something;

2.Now Netcom is being swallowed up by Unicom, which means that there is no Netcom, only Unicom;

3.called a network service operation provider;

4.I don't ask that, I think you think it is divided into wired and wireless, and optical fiber is used to reduce signal attenuation for long-distance connections.

5.Optical fiber broadband is directly from the operator's equipment room to pull light into the home, while ADSL is dial-up Internet access through ** line, and the speed of optical fiber is generally fast.

6.Logical isolation doesn't make sense, are you afraid that the two networks will poison each other or something? I don't know much about this, I've only seen our unit have a dual network card switching machine, dual hard disks, which is physically isolated.

Now there are only three major operators in the country: Mobile, Unicom, and Telecom (Netcom was swallowed up by Unicom, and Tietong was taken down by China Mobile); It's part of the operator's network and broadband!

Computer Internet access at home is generally ** dial-up, some use community broadband, fiber optic costs are relatively high! Wi-Fi: You can buy a wireless router and set up a wireless network to use by yourself! The premise is that you have a network (broadband or optical fiber or something), wireless is for me to give some terminals, such as laptops or mobile smart ** and so on wifi!

If you want your computer to connect to two networks at the same time, it's unstable, but sometimes it can be used, and it won't take long before it drops!

1. Learn the settings of various property panels. Taskbar properties, start properties, desktop properties, and more.

2. Learn to manage and operate documents. Create, modify, delete, rename, copy, paste.

3. Learn to set up the control panel.

4. Learn to add and delete programs.

5. Learn to add and uninstall hardware devices.

8. Master the basic operation of surfing the Internet.

That's about it.