TrojanDownloader:O97M/Daoyap.C is detected by my Avast but cannot be removed completely. This virus malware always comes back again and again, and I don’t know how to remove it manually. Some of my friends said Trojan horse needs to be removed manually, but I am not a computer savvy, how can I do that? And there so many system files, so how can I figure out which one is the virus file? Can you guys help me step by step to clear up this Trojan malware completely? I don’t want it to mess up system further.

TrojanDownloader:O97M/Daoyap.C Virus Description:

TrojanDownloader:O97M/Daoyap.C is a dangerous and harmful computer malware. Once this Trojan virus gets on computer, it will create harmful actions to computer system. the virus modifies and edits the registry settings, and it will create new registries to carry out its assigned task for it. The Trojan virus can also change the default settings of system. for example, the virus will implant its malicious codes or files into registry editor, start up items and Windows folders to disable system important files. When system important files are damaged and disabled, computer will run abnormally. When you start up computer, some error codes will show on screen or you even cannot boot up the machine. Some unwanted files with extension of .exe will show on some system folders, which will take up some capacity of system. Some .exe files on desktop even can’t be deleted. Computer performance also slows down. If you open many programs or processes, computer will get stuck or windows explorer often stops working. While this TrojanDownloader:O97M/Daoyap.C infection affects your computer, you will find web browser also runs slower than before, because many junk files are created to take up too much system capacity and Internet resources. Anyway, this Trojan virus will create more damages to computer system, you’re suggested to clear it up completely.

TrojanDownloader:O97M/Daoyap.C also can open backdoor to introduce other adware, malware or virus into computer system.  When computer is infected with many infections, it will run slower. The Trojan virus together with other malware would have the ability to destroy antivirus program even the window firewall.  With help of some virus, remote hackers can access your computer to get something valuable. So in fact, the virus is the big threat to your personal information. To keep your computer safe, you should pay attention to what you perform online well. Please don’t visit unsafe websites, as those websites would contain malicious virus codes or files, and if you visit it or click something popping up from the webpage, the virus or malware thing will soon activate and get installed into computer. Unsafe websites are actually controlled by cyber criminals who create the Trojan virus. Second, please don’t open spam email attachments which would also carry virus or malware process. One clicking will bring the virus to get installed into computer. Therefore, you should keep an eye on what you do on webpage, which will help you prevent the virus from getting on computer.

Some Traits about TrojanDownloader:O97M/Daoyap.C Virus

-Can slow down the performance of the computer, or even blue screen.

-Can create many junk files which occupy a lot of space in hard drive.

-Can download other malicious programs into computer, which make further damage.

-Can redirect you to pages you don’t want all the time no matter what you are doing.

-Take a long time to turn on or shut down your computer

-Your sensitive information can be stolen by hacker who can access to your computer with the help of this Trojan.

-May pretend as an anti-virus program and cheat you that computer is in dangerous, and ask you to pay to remove the threats.

Warm prompt: It’s complicated for people who are not computer savvy or not familiar with the virus to remove the TrojanDownloader:O97M/Daoyap.C virus. You can contact YooCare/YooSecurity PC professional online service for help:

Removal Guide for PCs with Windows OS

There is a removal guide of Trojan provided here; however, expertise is required during the process of removal, please make sure you are capable to do it by yourself.

>>>>>> Press Ctrl+Shift+Esc keys simultaneously to get the Task Manager to stop the active processes of TrojanDownloader:O97M/Daoyap.C virus. To do this, you will need to click the “Processes” tag at the top then find out suspicious processes and right click on them and select “End Process”.



>>>>>> Click “Start” menu at the lower left corner and type “regedit” in the search programs and files box and press Enter key. Then you will open the “Registry Editor”.



>>>>>> You will need to find out the suspicious registry files related to this Trojan virus in the Registry Editor, They are usually located in: HKEY_LOCAL_MACHINE > SOFTWARE. You need to distinguish them from their “Name” and “Data” at the right column. All of them will be randomly distributed. If you are not good at this, ask for an expert for help.

registry editor

>>>>>> After you find out the suspicious registry files, you need to find out where the .exe files of the Trojan virus locates. Usually, they will be in the operating system drive. To open it, you will need to click Start menu > Computer & My computer. Generally speaking, the Operating System drive is Local Disk (C:).


>>>>>> Basically speaking, all the related files of TrojanDownloader:O97M/Daoyap.C virus will be located in Windows > System32. Find out all the files of the Trojan virus and delete them. Make sure that all the files you deleted are viruses, but not the files of the operating system. Any mistakes will cause data loss even system crash.


Video of Key Steps on How to Modify or Change Windows Registry:


TrojanDownloader:O97M/Daoyap.C virus can severely attack your computer once it gets on your PC. It corrupts your system files, weakens the security level of the infected computer and modifies all your key registry settings as well as disables your firewall because of its root-kit. The CPU usage percentage will become higher than before, which will cause constant blue or black screen death and system freeze. This Trojan virus helps cyber criminals remotely control the infected PC. So hackers can do anything on your PC and get any information from your computer or by tracking your online history. And users’ personal information like credit card, bank account details, log-in passwords or other financial information could be leaked out. Victims of this  virus will suffer from financial loss. This Trojan must be removed as fast as possible to avoid further damages if you detect this nasty thing on your computer.

Warm prompt: If you are not computer savvy or not familiar with the virus to remove TrojanDownloader:O97M/Daoyap.C virus. You can contact YooCare/YooSecurity PC professional online service for help:

Published by Tony Shepherd & last updated on February 4, 2016 10:06 am

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