Backdoor.Preft!gm Removal Guide

Hey, there. Last night, I downloaded some programs to my brand new laptop. And I was warned that there is a virus called Backdoor.Preft!gm in my computer. I know it is a bad stuff that can damage my system, so I uninstalled all the programs I saved on my laptop to see if it can be removed in this way. I also used my antivirus tool, Norton to remove this virus. None of them worked. What should I do now? Can anyone help me remove this virus step by step? Thank you very much!

Computer Be Infected By Backdoor.Preft!gm–How to Remove?

This Backdoor.Preft!gm is a newly designed by cyber hackers and it is widely spread on the Internet. This virus can get into your computer with being attached to the third application, so that you may not know about it unless you get the warning from the antivirus program. This infection used to infect your computer through downloading freeware, visiting suspicious websites or links, reading or responding spam emails as well as its attachments and installing unsafe programs on your computer. As a new Trojan horse infection, it can be capable to escape from being removed by security tools as those tools need time to update the virus library to the latest version so that they could have the solution to get rid of this infection. However, before anti-virus programs can eradicate this infection, it can already damage and disable the tools from the startup. It is an extremely dangerous Trojan virus as it can not only damage the infected systems by its own, it can also help many other kinds of infections to come and make more troubles to the corrupted computer.

Once Backdoor.Preft!gm installed, your computer will not work normally. Lots of computer traffics will be caused by this Trojan. Once infected, this Trojan may take control of your online activities at once. In addition, it may change your browser setting. It may modify your default homepage to some unsafe web sites. So, you will be redirected to visit some suspicious websites. Furthermore, it may bring into other threats to your computer to make it worse, such as spyware, adware, malware as well as other Trojans. As a result, your computer will work more and more slowly. This virus can’t be removed or detected by general anti-virus. The most effective way to get rid of this Trojan is using manual removal guide. Therefore, if your computer has been detected being attacked by Backdoor.Preft!gm, please take step by step removal guide to eliminate it as early as possible.

Processing manual removal should have a certain level of computer literacy. If you are not sure how to start or afraid of making any critical damage on the computer system, please open a live chat with YooCare Expert now!

What Will This Trojan Actually Do on Your Computer?

1. Desktop background image and Browser homepage settings are changed. Google, Yahoo Searches are redirected.
2. It may slow down your computer considerably and you will feel like your computer is stuck. This includes opening programs, shutting down your computer, and slow Internet.
3. It is capable to corrupt your windows registry and uses it to deploy annoying pop up ads out of nowhere. You will get many unwanted pop-ups on your computer.

Note: No matter how the virus accesses your PC, users should know that there are no tools can remove this pesky Trojan automatically at this moment, it is suggested users not spend much time in downloading or paying any security software which claims can delete this stubborn virus. It is totally useless. To completely get rid of Backdoor.Preft!gm, professional manual guide is needed.

About Trojan Virus Removal:

Currently many computer users had the same experience that this virus couldn’t be removed by any anti-virus applications. So the manual approach is always required to combat this virus. And here is the step-by-step removal guide for all computer users.

1. End the malicious process from Task Manager.
Backdoor.Preft!gm is installed,computer user may notice that CPU usage randomly jumps to 100 percent. At any time Windows always has many running processes. A process is an individual task that the computer runs. In general, the more processes, the more work the computer has to do and the slower it will run. If your system’s CPU spike is constant and remain at a constant 90-95%, users should check from Task Manager and see if there is a suspicious process occupying system resources and then end it immediately.

(The name of the virus process can be random.)

Press Ctrl+Shift+Esc to quickly bring up Task Manager Window:

task manager
2. Show hidden files and folders.

Open Folder Options by clicking the Start button, clicking Control Panel, clicking Appearance and Personalization, and then clicking Folder Options.

Click the View tab.

Under Advanced settings, click Show hidden files and folders, uncheck Hide protected operating system files (Recommended) and then click OK.

Folder Options

3. Open Registry entries. Find out the malicious files and entries and then delete all.

Attention: Always be sure to back up your PC before making any changes.

a. Press Windows key + R to open Run box. In the “Open” field, type “regedit” and click the “OK” button.


Then a Registry Editor window will pop up as the following picture shows:

registry editor

b. Search malicious files and registry entries and then remove all of them:

%AllUsersProfile%\Application Data\.exe

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\[random]
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Temp

Video Shows You How to Safely Modify Windows Registry Editor:


Backdoor.Preft!gm is a vicious Trojan infection which may display annoying ads on your system after its installation. This virus may get into your computer without your permission and knowledge. Once installed, this malicious Trojan will become a big threat to your computer system as well as your financial security. Thus, it is highly recommended to get rid of this vicious Trojan as soon as possible once it is detected. As we all know that such stubborn Trojan infection can only be removed by manual. However, manual removal process is a complicated procedure. If you make any mistake during this process, you may lead to a mess up on your system. It is recommended that if you don’t know how to start, please click on the blue button of live chat on this page with Yoocare Online Expert for further assistance.

Note: Still have trouble in removing this virus? If you don’t want to mess up your whole PC, Please contact YooCare Experts for instant help now.

Published by on December 24, 2015 1:18 pm, last updated on December 24, 2015 1:18 pm

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