Can’t get rid of this Trojan Downloader:O97M/Donoff virus? My computer was running extremely slow. The Trojan virus corrupted my system and made it frozen up frequently. I was annoyed at getting pesky ads or messages popped up on my Internet browser. I tried several anti-virus programs, but none of them worked. What can I do to save the computer? How to delete the risky Trojan horse from the contaminated system completely? Please benefit yourself from this post and follow removal guide below to deal with the Trojan virus safely.

Information about Trojan Downloader:O97M/Donoff Virus:

Trojan Downloader:O97M/Donoff is a malicious Trojan infection that brings great damages to target computers. It is designed by cyber criminals and changed into different variants. It is capable to affect PC users all over the world. The Trojan infection penetrates into users’ computer while you visit doubtful websites, open spam email attachment and download nasty freeware from affected web pages. Upon installation, the Trojan horse launches itself at startup and runs as a background program. It takes up your CPU usage greatly as well as other computer resources. Apparently, it slows down the system performance and disconnects your Internet sometimes. When you surf the net, play games, launch large programs etc., you will find it easy to get stuck or frozen up a lot. Moreover, the Trojan virus can damage your system files and entries and leave some harmful files to your computer without any notice. If you ever leave the Trojan virus in your computer too long, you will suffer from a lot of computer damages and data loss. It is necessary for PC users to get rid of the Trojan Downloader:O97M/Donoff virus from the affected system immediately.

The key point of the Trojan virus remains in its ability to trace victims’ online history and system data to collect your data for cyber criminals to perform illegal activities. It also helps some unwanted extensions, plug-ins and ads-on to be installed in the vulnerable computer aggressively. During users’ Internet browsing tasks, the infection may trigger pesky redirect issue. That is, the Trojan virus becomes an obstacle for you to enjoy your web browsing activities. It keeps redirecting your Internet search results to non-beneficial web pages and display many pesky ads or messages on your Internet browsers. It also modifies your default computer settings like desktop image and browser homepage, making you much freaked. In this situation, PC users should take actions to work out a manual removal way to delete the Trojan Downloader:O97M/Donoff virus completely.

Note: Manual Removal requires expertise and it is for advanced computer users, if you don’t have much experience in dealing with such virus infection.
Contact YooSecurity Online PC Experts for removal assistance.

Symptoms of Similar Trojan Infection:

– This virus can escape from most antivirus protection and get itself installed on computers especially with Windows operating systems.
– It can cause constant stuck or even blue screens on the infected computers.
– Computer users will experience constant security pop ups on the computers which may not truly represent the status of the PCs.
– Certain malware or spyware may be prompted by these fake security pop ups which will end up scamming money.
– Sensitive data like privacy can also be stolen and taken advantages by cyber criminals.

Manual Removal Step by Step Instructions

Up till now, there is not a perfect anti-virus tool that can detect this pesky Trojan virus or delete it entirely. Trojan Downloader:O97M/Donoff has been updated by remote and backstage cyber criminals and is able to escape from the scan of any anti-virus programs thus it is hard to be removed or even found. The most effective way is to remove it manually. The following instructions need quite level of computer expertise, for manual removal is a complicated and difficult process. If you don’t know how to that correctly, please contact with YooSecurity online support now!

Step A: Open Windows Task Manager to end process related to this Trojan infection. To do that, press Ctrl+Alt+Del keys at the same time to pull up Window Task Manager; go to Processes tab on top and scroll down the list to find.


Step B: Open Control Panel from Start menu and search for Folder Options. Go to Folder Options window, under View tab, tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then click OK.


Step C: Press Windows+R keys to pull up Run box and type in regedit to open Registry Editor.


Step D: Delete all these associated files and registry entries with Trojan Downloader:O97M/Donoff virus from Registry Editor. The registry files are listed randomly. Besides, you need to delete the infection files of the redirect virus from your system files to prevent it from coming back. Those files are named randomly also but may be different on different operating systems.

Video on How to Modify or Change Windows Registry Safely:

To Summarize Shortly:

The Trojan Downloader:O97M/Donoff virus becomes a great threat to worldwide computers. It is designed to damage your computer and steal vital information from unknown victims. And it exploits your system vulnerabilities to cause system crash, startup failure and freezing problems easily. Besides, the Trojan virus is capable to drop malicious codes like adware, worms and malware etc. to your computer secretly. It messes up your computer files and entries and creates new harmful files in your system without any consent. When you perform Internet searches, you will get many troubles caused by the Trojan, such as you are redirected to unwanted content and get your computer settings changed randomly. To completely resolve the Trojan issue, an effective manual removal is highly required.

Note: Have tried many methods but failed to remove Trojan Downloader:O97M/Donoff? If you have no clue, please contact YooSecurity Online Experts in time to save your computer.

Published by Tony Shepherd & last updated on October 21, 2014 1:49 pm

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