What might happen to win7 after being invaded by malware?

The first phenomenon: the browser homepage connection has been tampered with

If you have not adjusted it and found that the browser default home page has changed, It is likely that the system is infected with malware. Similarly, when using Baidu search, clicking on the connection provided by Baidu, but being directed to a random connection, is also the performance of the system infected by viruses or malware.

The second phenomenon: the browser can not access the Internet

When the network connection is normal, but there is a problem that the Internet cannot be accessed, it is very likely that the system is infected by malware. All we have to do at this point is to double check the settings and go to the browser's network connection project to make sure no proxy server is set up. If you confirm that you are not using a proxy server, it is because the system is infected with malware.

The third phenomenon: pay attention to the pop-up prompts

Usually, a potential sign of malware infection will pop up, sometimes pop-up erotic window, unexpected Pop-ups, especially when pop-ups that do not start with a web browser, are a sign that the system has been infected with malware. You must reboot the system, enter safe mode, and use powerful anti-malware tools. Remove it.

The fourth phenomenon: the decline in system performance

The most annoying thing about malware is that it can lead to system performance degradation, whether it is network connection or application running speed. . Of course, only the performance degradation of the system does not mean that it is infected by malware, and it is also likely to be caused by other reasons, such as disk fragmentation and system garbage.

First of all, we should eliminate other possibilities and take measures to deal with the problem of system performance degradation. The usual measures are to defragment the disk, clean up the garbage, increase the memory, etc. If the necessary measures are taken, the system performance is still not If you improve it, it is probably a problem caused by malware.