Dry to determine if your computer is in a virus.

A variety of viruses today can be regarded as a blossoming, make a panic, once found that their computer is a bit abnormal to identify the virus in the mischief, everywhere looking for anti-virus software, a no, and then one, in short, it seems not to find "culprit" just like, the result of virus software is used one after another Perhaps for this the renminbi is used one after another, or not see the "culprit" traces, in fact this is not necessarily the virus in mischief.

Such examples are not uncommon, especially for some novice computer users. Below I combine personal computer use and enterprise network maintenance of anti-virus experience from the following aspects to introduce how to determine whether the virus, I hope to help identify "real poison" has some help!

The differences and connections between viruses and hardware and software failures

Computer failure is not only because of the virus will have, the use of personal computers in the process of a variety of fault phenomenon is due to the computer itself, hardware and software failures caused by the network is due to the permissions set. Only when we fully understand the difference and the relationship between the two can we make the correct judgment and discover it in time when the real virus comes. I'll briefly list some common computer failure symptoms caused by viruses and hardware and software failures.

Potential for software and hardware failure after virus intrusion

Often crashes: viruses open a lot of files or occupy a lot of memory, instability (such as poor memory quality, bad hardware overclocking performance); Large-capacity software consumes a large amount of memory and disk space, some test software (with many bugs), no hard disk space, etc. When running software on the network, it may be because the network is too slow, the program running is too large, or your workstation hardware configuration is too low.

The system failed to start: The virus modified the boot information for the hard drive or deleted some boot files. If the boot virus boot file is corrupted, the hard drive is damaged or the parameter is set incorrectly, and the system files are accidentally deleted.

File not open: Virus modified file format, virus modified file link location. file damage; the hard drive is damaged; the link location for the file shortcut has changed; the software that edited the file has been deleted, and if it is in the LAN, it has changed the location of the file in the server and the workstation did not rinse the contents of the new service in time (the resource manager has been open for a long time

Often reported insufficient memory: viruses illegally occupy a large amount of memory, open a large number of software, run the memory resources required software, the system is not configured correctly, the memory is not enough (the current basic memory requirements of 128M) and so on.

Tip Hard disk space is not enough: virus replication of a large number of virus files (this encountered several cases, sometimes good near 10G hard disk installed a WIN98 or WINNT4.0 system said there is no space, a software installation prompts the hard disk space is not enough. Hard disk each partition capacity is too small, installed a large number of large-capacity software; All software is centrally installed in a partition, the hard disk itself is small, if the system administrator in the LAN for each user set the workstation user's "private disk" to use the space limit, because view the entire network disk size, in fact, "private disk" The capacity has been exhausted.

Floppy disk and other devices do not have access to read and write signals: virus infection; The floppy disk was removed and opened files that had been opened in the floppy disk.

There are a large number of files of dubious origin: virus copying files, temporary files that may be generated in some software installation, or configuration information and running records for some software.

Start black screen: viral infection (remember the deepest 4.26 in 98, I paid a good price for the cih thousands of yuan, the day I first boot to the Windows screen on the crash, the second time the boot on nothing at all; monitor failure, display card failure, motherboard failure, overclocking excessive, CPU corruption, etc.

Data loss: The virus deleted the file, the hard disk sector was damaged, the original file was overwritten because of the recovery file, and if it was a file on the network, it may have been mistakenly deleted by another user.

The keyboard or mouse is locked for no reason: virus mischief, especially to pay attention to "Trojan"; keyboard or mouse damage, the keyboard or mouse interface on the motherboard is damaged, running a keyboard or mouse lock program, the program running too large, long time system is busy, showing the keyboard or mouse does not work.

The system is running slowly: The virus is consuming memory and CPU resources, a large number of illegal operations in the background, low hardware configuration, too many open programs or too large, system configuration is not correct, if you are running a program on the network due to your machine configuration is too low, it may be at this time the network is busy, There are many users who open a program at the same time, and another possibility is that your hard disk space is not enough to use for temporary exchange of data when running the program.

The system performs the operation automatically: the virus performs illegal operation in the background; the user sets up the automatic operation of the program in the registry or the startup group, and the system is automatically restarted when some software is installed or upgraded.

Through the analysis of the above comparison, we know that most of the fault may be due to man-made or soft and hardware failure, when we found that the exception do not rush to assert, in the case of anti-virus can not be resolved, we should carefully analyze the characteristics of the fault, the elimination of soft, hardware and man-made possibilities.