Tip 1: How to scan for viruses if the operating system is locked
Tip 1: How to scan for viruses if the operating system is locked
Viruses and Trojan programs are verya serious threat. In most cases, anti-virus programs can cope with them, but sometimes the user is faced with a situation where, due to the Trojan program infiltrating the computer operating room system is blocked.
Instructions
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The operating system is usually blocked"Trojany-extortionists." If you infect a Trojan-like program, the computer's operation is blocked, a window appears prompting you to enter the code to unlock it. This code is suggested to be received after sending a certain amount to the details specified in the message.
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If you encounter a similar formfraud, never go on about the extortionists and do not send them money, if only because there is no guarantee that you will really send the code. In addition, it is the users who send money that support and encourage this method of fraud.
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In the event that you have a computerinstalled two operating systems (this option is very convenient and useful), boot into another OS and go to the sites of antivirus vendors. On them you can find many existing codes for unlocking. For example, look here: https://www.drweb.com/xperf/unlocker/
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Even if the operating system succeededunlock, the computer remains traces of the presence of the Trojan program, which can cause some problems. Use free utilities from manufacturers of anti-virus programs to clean your computer. For example, this: http://www.freedrweb.com/cureit/
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If you do not have a second operating system orthe ability to go online from another computer, there are two options. The first, the best - install the second OS. If you have two or more hard drives, install it on one of the free hard drives. If the disk is one, split it into two using the Acronis Disk Director utility. You will need a utility that works with the installation disk. Having installed the second OS, you can restore the main operating system.
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The second option is related toUsing a Live CD with an operating system that boots directly from the CD. Usually this is a slightly truncated, but quite workable version of Windows XP. Boot "under it", you can go to the sites of antivirus software producers and try to unlock the computer.
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If, despite all attempts, unlock the OSfailed, there is one option - after booting from the second operating system or Live CD, save all the important data, then format the disk with the locked OS and reinstall it. When formatting, choose full formatting, not clear headers. After installing the new operating system, immediately install the anti-virus program and update its databases.
Tip 2: How to return a command line
Command line is a system utility thatprovides the ability to work with the files of the operating system directly, as it was in the Dos environment. The disappearance of the command line most often occurs because of the malicious action of viruses and crashes in system files.
You will need
- - Administrator rights.
Instructions
1
Check the integrity of the system fileson drive C. Start "Computer Management" and select "Disk Management" in the utility. Perform a scan and patch on the sectors on drive C. Typically, these operations on the personal computer can take a lot of time, so wait until the end, because an interrupt can lead to an operating system crash.
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Restore the state of the operating system toprevious restore point. To do this, go to the "Maintenance" section of the "Control Panel" and select the "System Backup and Restore" section. Specify the previous restore point and start the process.
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Check the settings of the antivirus program. Perhaps the command line was mistakenly blocked by the antivirus. Errors in such actions, of course, are quite rare. Locate cmd.exe in the list of blocked applications and remove the program from the list. Try to boot the operating system in safe mode. To do this, restart the computer and press F8 to display the list of modes. After running Safe Mode, check the command line.
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If all these operations did not lead to recoverycommand line, you must reinstall the operating system. Save the personal data from the user's folder to a different partition, since when you install the system, drive C is recommended to be formatted. Then, boot the computer from the installation disc and start the reinstallation process. As a rule, the command line can be blocked due to the presence of various viruses in the operating system. Perform a full scan of your computer so that the system finds all harmful programs and completely removed them from the hard drive.
Tip 3: What if the virus blocked the computer
Despite the reliability of modern anti-virussoftware, very often there are situations when the virus blocks the system. In some cases, the virus can be deleted, and the data stored on the computer can be left unharmed.
To remove the virus and unlock the computeryou will need additional software and hardware, namely: a computer or a laptop connected to the Internet and having a workable drive for burning discs; clean CD. Find the disk image with the multiboot system, download it and burn it to a CD.
