Remove Checkup04.biz Virus — How to Fix Guide

Checkup04.biz pop-up notices may appear out of the blue, covering the content of the website you went to or opening your web browser when you don’t need it to be opened.

Clicking the Checkup04.biz advertisement may cause the injection of various malware or unwanted programs. In this guide, you will see the manual of Checkup04.biz popups clearing in several ways, and also examining your computer for other malware presence.

It is better to prevent, than repair and repent!

Removing Checkup04.biz manually may take hours and may damage your PC in the process. I recommend you to download GridinSoft Anti-Malware for threats removal. Allows to complete scan and cure your PC during the trial period.

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What are Checkup04.biz pop-ups?

Checkup04.biz popups are a result of adware action. Adware is a kind of malware that demonstrates to you the pay-per-view of pay-per-click advertisements, which generates a substantial volume of earnings for adware representatives. These advertisements may contain explicit material, or have a link to harmful content/website, since adware maintainers have no purpose to check the goodness of the content they are going to reveal – their solitary target is money.

Checkup04.biz push notification.

Pop-up marketing itself is a very good, cheap and also really productive marketing solution¹. It enables the seller to link the customers’ attention to their site, and the customers to get the dynamic updates on the goods they wish to buy. When the consumer will receive a pop-up notification that the TV set he desires to purchase is provided at the online store he/she checked out previously with a 15% price cut, one will definitely use this possibility and buy it. Taking into consideration the very low cost for the popups and their targeting, such an advertising instrument is a much-loved thing among the marketing teams of big internet sellers.

Nonetheless, such a profitable system could not be missed by virus developers. Option to demonstrate the popup advertisements by force to the victims of malware attack is a perfect basis for evil-minded tricks with the popup promotions. And Checkup04.biz advertisements is among hundreds that are “employed” in this scheme.

Here is a short info for the Checkup04.biz

How have I got the Checkup04.biz virus?

There are a number of ways of becoming contaminated by the adware that trigger the Checkup04.biz popups tornado. A lion’s part of this computer virus cases is after the freeware or cracked programs, that are spread on the peering networks. Free software can likewise be downloaded from the official site, and the adware is supplied as a legal bundled program.

There is no need to blame yourself. A plenty of individuals often utilize the uncertain programs from untrusted providers: abandonware, a wide range of utilities that are free, or perhaps hacked programs. All of these types of programs are dangerous, because it is extremely easy to include a Checkup04.biz malware under the guise of part of the license hacking script, or as a part of the self-made algoritm within the Windows optimization tool.

Checkup04.biz popup malware may likewise be concealed in the ad somewhere on the strange website. Such websites are typically full of intense and blinking advertisements, and their owners often accept any kind of promotions to be published on their web page. For this reason, clicking on such banners is a shot in the dark: only the ad provider knows what will occur when you press this ad. Besides some “light” viruses, like adware or undesirable programs, you can also receive something much more risky, like ransomware or coin miner; the substantial share of coin miners distribution is exactly after the malicious ads.

The statistic shows that people dislike popup advertising more than other types of promotions

Potentially undesirable applications, like Checkup04.biz pop-up virus can provoke a wide range of different troubles on your personal computer. Distracting is not the single effect – pop-ups may present you the advertisements, where you are offered to get one more unknown application, or “a effective security tool”. Scareware is usually distributed with the last motto. Potentially unwanted applications, in turn, may have spyware functions. And it is quite hard to distinguish the undesirable app from a legit one, if you don’t know the exact names. Besides the potentially unwanted programs and dubious antiviruses, popup-related ads are also used as a spreading method by different trojan viruses, for instance – coin miners. The consequences of activity of such viruses is 100% unpleasant, and can cost you hundreds of dollars. And even if you are not clicking these ads, they can be clicked by whoever who also makes use of your computer – parents, children, spouse, etc. So the things can become much more serious, and it will be much harder to solve it without data loss. It is recommended to get rid of the viruses with antivirus applications as soon as possible.

How can I get rid of Checkup04.biz pop-up advertisements?

The manual of Checkup04.biz adware clearing includes 2 parts. First, we need to exterminate the malware, and then fix the effects of its action. The elimination procedure is very easy, due to the fact that it may be done even with using Microsoft Defender – security tool that is present on all computers with Windows 8/10. Nonetheless, as a result of its huge resources usage, as well as some bugs that can be pivotal for some types of individuals, Defender is frequently disabled by the users, so its utilization is most likely impossible. Furthermore, a variety of trojan viruses are capable to turn off the embedded antivirus. It is better to make use of the separated program that will not have such weakness.

I’d recommend you to use Gridinsoft Anti-Malware² – a well-proven anti-malware tool that will certainly erase the viruses from your system and also create an invulnerable shield with a Proactive protection feature. But let’s deal with Checkup04.biz adware initially.

Removing Checkup04.biz popup virus with GridinSoft Anti-Malware

• Download and install GridinSoft Anti-Malware. After the installation, you will be offered to perform the Standard Scan. Approve this action.

• Standard scan checks the logical disk where the system files are stored, together with the files of programs you have already installed. The scan lasts up to 6 minutes.

• When the scan is over, you may choose the action for each detected virus. For all files of Checkup04.biz malware the default option is “Delete”. Press “Apply” to finish the malware removal.

Now, when the computer is clean of viruses, we can proceed to the browser reset. You can do this step manually, as well as with the use of GridinSoft Anti-Malware.

Reset browser settings to default

Manual method of browser reset

To reset Edge, do the following steps :

1. Open “Settings and more” tab in upper right corner, then find here “Settings” button. In the appeared menu, choose “Reset settings” option :

2. After picking the Reset Settings option, you will see the following menu, stating about the settings which will be reverted to original :

For Mozilla Firefox, do the next actions :

1. Open Menu tab (three strips in upper right corner) and click the “Help” button. In the appeared menu choose “troubleshooting information” :

2. In the next screen, find the “Refresh Firefox” option :

After choosing this option, you will see the next message :

If you use Google Chrome

1. Open Settings tab, find the “Advanced” button. In the extended tab choose the “Reset and clean up” button :

2. In the appeared list, click on the “Restore settings to their original defaults” :

3. Finally, you will see the window, where you can see all the settings which will be reset to default :

Opera can be reset in the next way

1. Open Settings menu by pressing the gear icon in the toolbar (left side of the browser window), then click “Advanced” option, and choose “Browser” button in the drop-down list. Scroll down, to the bottom of the settings menu. Find there “Restore settings to their original defaults” option :


2. After clicking the “Restore settings…” button, you will see the window, where all settings, which will be reset, are shown :

When the browsers are reset, you need to ensure that your browser will definitely connect the appropriate DNS while connecting to the website you want. Make a text file named “hosts” on your pc’s desktop, then open it and fill it with the following lines³:

Find the hosts.txt file in C:/Windows/System32/drivers/etc directory. Rename this file to “hosts.old.txt” (to distinguish it from the new one), and then move the file you created on the desktop to this folder. Remove the hosts.old from this folder. Now you have your hosts file as good as new.

Nevertheless, there is one issue that makes the things much more difficult to repair, particularly without the anti-malware software. Most of adware versions that are used to show you the Checkup04.biz pop-up advertisements are altering the deep browser settings, disabling an access to the settings tab. So, if you try to change your browser settings after your computer was penetrated by pop-up-related malware, your browser will collapse soon. In some cases, you will see no crash, but large lag spike after pressing the “settings” key. Browser will stop reacting for ~ 30 secs, and then it will be back to the typical, till you attempt to open settings again.

Reset your browser settings with GridinSoft Anti-Malware

To reset your browser with GridinSoft Anti-Malware, open the Tools tab, and click the “Reset browser settings” button.

You can see the list of the options for each browser. By default, they are set up in the manner which fits the majority of users. Press the “Reset” button (lower right corner). In a minute your browser will be as good as new.

The browser reset is recommended to perform through the antivirus tool by GridinSoft, because last is also able to reset the HOSTS file without any additional commands.

How to Remove Checkup04.biz Pop-ups?

Name: Checkup04.biz

Description: Checkup04.biz - a lot of users became a target for the pop-up advertisements. I have a lot of friends who literally bombed me with the questions like “how to remove Checkup04.biz push notifications?” or “why do Checkup04.biz pop-ups keep appearing on Chrome even after AdBlock installation?”. In this article we will show you how to deal with Checkup04.biz pop-ups, which may corrupt your browser’s correct performance, and create a lot of troubles while you are working.

Operating System: Windows

Application Category: Adware

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1. More about pop-up advertisements on Wikipedia.
2. GridinSoft Anti-Malware review and also the reasons why I suggest it for malware removal.
3. Official Microsoft guide for hosts file reset.