How to prevent computer viruses?

It is recommended to use Qihoo 360 Security Guard. Look for it. Simple to use.

If a virus is suspected, go to safe mode to clean the virus. The way to enter safe mode is to restart the computer and press the F8 key when the screen is black.

Then use the up and down keys to type into safe mode to enter the system.

After entering the system, open the anti-virus software to clean up the virus, and do not run any programs. Because the virus is in safe mode, it is inactive. It's easy to kill.

It is recommended to install a 360 security guard. Remove the plugin that imposes the installation. Don't pretend to be Yahoo Assistant, one of the top 10 rogue software. It's hard to get rid of.

IE's starting home page is the first page to enter every time you open IE, and you can also enter the starting home page by clicking the "Home Page" button in the IE toolbar at any time, it is generally a page that we need to view frequently, but some malicious web pages will change the starting home page to some messy **, in order to achieve its ulterior purpose.

To fix the IE starting home page, click "Internet Options" in the IE "Tools" menu (take IE5 as an example, the same below), select the "General" tab, and enter ** of the start page in the "Home" text box.

If it doesn't work after making the above settings, it must be that a malicious program is loaded in the Windows "Startup" group, so that every time you start the computer, the program will automatically run to set up IE illegally. You can use the registry to purge such programs from the Startup group.

After reciting "Pain, Enter, [Hkey Local Machine Software, Microsoft Windows Current Version Run] in the registry, the right window displays all the program items loaded at startup, and the key names containing the suspicious program are deleted.

In addition to the start homepage, there are also cases where the default homepage is modified. We also went through the registry to fix the default homepage. [Hkey Local Machine Software Microsoft Internet Explorer Main] primary key, the key-value name "default-page-url" in the right window determines the default home page of IE, double-click the key-value name, enter ** in the "key-value" text box, this ** will become the new default home page of IE.

It is recommended that you install the trial version of Skynet Firewall which is free for an indefinite period of time and does not require registration, although it has few features but is very useful.

Anti-computer virus is a very tricky problem, but for the problem of pop-up ads, I suggest you use Super Soba, I have been using Super Soba, it's very easy to use, no more pop-up ads, and Super Soba, unlike Yahoo Assistant, Yahoo Assistant is rogue software, he always modifies the homepage, Super Sooba is not, and it's very easy to use.

Go buy the latest pirated system of Tomato Garden XP+SP2+ latest patch Format the C drive and reinstall the system.

Then install Kaspersky 6

I used genuine Kingsoft Domination 2007 to kill it all in exchange for Kaspersky.

The best thing to do is not to go online.