Infected with PUP.BundleInstaller.OI? Is that harmful? Really don’t know where it comes from? Computer is quite slow? How to fix? This step-by-step guide will help you to fix it completely.

Analysis on PUP.BundleInstaller.OI

The multiple bad functions PUP.BundleInstaller.OI performs make us realized its severity scale. What this scourge does to a computer is potentially a big risk of identity theft and a probability of malign impact upon the system due to its consuming the resources that would otherwise be streamed towards processing essential tasks. It can establish a connection with a remote data processing center run by cyber criminal who may get hold of your personal information in the long run. That’s not the only drawback of this dangerous abomination though. Just like the Win32.SuspectCrc!E2 pest, once this pest manages to settle down inside your system, it silently passes through the possible obstacles and even makes it to Windows Registry, adding some new entries to it. Besides, PUP.BundleInstaller.OI is known to have changed the computer settings in some cases – not noticeably for the victim of course. Even though the latter activities are not likely to be noticed by you, they lead to some outcomes. Your computer may start flipping out in some respects.

To be with PUP.BundleInstaller.OI is pretty awful

PUP.BundleInstaller.OI Is Dangerous to the Infected Computer

  1. It slows down the computer running;
  2. It degrades the computer performance;
  3. It generates malicious files and registry entries to the infected computer;
  4. It open backdoors to other infections and threats;
  5. It helps hackers to take control of the infected computer and steals the private information of users;
  6. It blocks the programs and messes up the system.

Method one: Manually remove PUP.BundleInstaller.OI from your system.

Method two: Remove PUP.BundleInstaller.OI Permanently with Spyhunter Antivirus software

Detailed PUP.BundleInstaller.OI removal guides are provided as below. please follow the steps in correct order. If you choose manual removal, don’t forget to back up your data first.

Method one: Manually remove PUP.BundleInstaller.OI from your system.

1. Stop the running process of PUP.BundleInstaller.OI in Task Manager.

  • Press CTRL+ALT+DELETE to start Windows Task Manager.
  • On Processes tab, right-click to stop the process relative to PUP.BundleInstaller.OI.


2. Go to Registry Editor, and clean up all suspicious registry files.

To completely remove PUP.BundleInstaller.OI, the key is to remove all leftovers about it which contain harmful files and registry entries.

  • Open Registry Editor: Press (win key+R), type in “regedit” without the quotes in the box, and Enter.
  • When the Registry Editor window opens, right-click to remove all the registry files related to it.


HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[RANDOM CHARACTERS].exe
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ‘Random’

3. Delete all the Files of PUP.BundleInstaller.OI

  • Windows 7, Windows Vista, and Windows XP
  • Open Start button and open Control Panel.
  • Open Appearance and Personalization link.
  • Double click on Files and Folder Option.
  • Click on the Show hidden files and folders option.
  • Select the “View” tab. “Show hidden files, folders and drives.”
  • Uncheck “Hide protected operating system files. Click OK.


Remove all the suspicious files as follows:

%AllUsersProfile%\Programs\{random letters}\
%AllUsersProfile%\Application Data\~r
%AllUsersProfile%\Application Data\~dll

Video tutorials for your reference:


Method two: Remove PUP.BundleInstaller.OI Permanently with Spyhunter Antivirus software

1. Download Spyhunter in your PC.

download spyhunter

2. Click Run to install Spyhunter


3. Fulfill the installation process as follows.




4. You can use Spyhunter to protect your homepage

protect homepage

5. Run Spyhunter to remove all the threats in your system.

In summary, PUP.BundleInstaller.OI is created by cyber crooks to obtain illegal interests. It may mess up your operating system, and bring a lot of troubles to you. Speedy removal is your best choice. Choose one of the PUP.BundleInstaller.OI removal methods above to regain a safe and clean PC now. If you don’t know much about computer virus manual removal, it is suggested that you download Spyhunter – the popular antivirus software here to get rid of PUP.BundleInstaller.OI and protect your system in the future.


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