Computer technician blog


General - General posts, notices and other information.
Viruses - News and articles related to viruses, will be posted in this section.
Windows - How-To guides for Windows users.
Mac - How-To guides for Mac users.

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Check if your Mac is not infected with Crypto Mining malware

A common myth often regaled around the office water cooler is that Macs do not become infected with viruses. This was partly spread by a 2009 Apple advertising campaign that formed part of the “Get a Mac” campaign. One of the key selling points of this campaign was that Macs did not suffer from the “thousands” of viruses (now commonly referred to as "malware"), which plagued Microsoft computers. Over time, it was proven that Macs were not exposed to the multitude of malware strains that targeted Windows systems. The reasons for this are the following:

  • Small market share. There is some truth to the “security through obscurity” argument. Many virus writers are motivated by the power they can command and money they can make by seizing control of large numbers of computers. That puts a financial premium on Windows malware, since, globally, there are far more Windows computers than those running Mac OS.
  • With Unix-based file systems and kernel, Mac Operating Systems are harder to infect with self-replicating programs. Windows allows users to develop and run executable code outside their own protected memory space, whereas Mac OS X does not.
The computer restarted unexpectedly or encountered an unexpected error

How To Fix "The computer restarted unexpectedly or encountered an unexpected error" Error 

You may have experienced 'The computer restarted unexpectedly or encountered an unexpected error.' This message also states the following: 'Windows installation cannot proceed. To install Windows, click "OK" to restart the computer, and then restart the installation'. In some cases, however, the computer restarts but you are still unable to proceed with the installation. This frustrating error affects many users but, fortunately, there are solutions.

System Call Failed

How To Fix explorer.exe "System call failed" Error?

explorer.exe is an integral part of Windows operating systems and the 'user shell' for Windows used by the desktop, File Explorer, Start Menu, taskbar, etc. explorer.exe was originally used to navigate or browse files, however, in newer versions of Windows it has evolved and is now a task-based file management system. Notably, explorer.exe is a system process required for Windows computers to function. Without it, you would need to open programs and perform various other tasks using Command Prompt (or Task Manager).

Google Chrome Is Unresponsive

How To Fix "Google Chrome is unresponsive. Relaunch now?" Issue

Released a decade ago, Google Chrome is one of the most popular web browsers. It was first available on Microsoft Windows only, and later ported to macOS, iOS, Linux, and Android. It has become a fast, simple, and secure browser for all devices. Chrome is designed to be fast in every possible way, secure by default, and easy-to-use for everyone. It is improving every day and generally problem free, however, even great products like Google Chrome can sometimes behave unexpectedly.

Computer Keeps Restarting. How To Fix It?

Computer continually restarts randomly and automatically without warning. How To Fix It?

You may have encountered a problem whereby your computer automatically restarts at random intervals without warning. The Windows operating system usually triggers a restart when there is a problem such as a Blue Screen of Death (BSOD) error. In this case, there is a critical problem with the Windows operating system requiring the error to be fixed immediately to prevent further problems - so the restart is not necessarily a bad thing. If, however, the computer continually restarts without warning and does not display any errors, this is a different type of problem.

How To Fix Common DNS Issues

How To Fix Common DNS Issues In Windows 10

DNS (Domain Name System) is analogous to a phone book for the internet. To access websites, we use domain names such as,, etc. and web browsers interact through associated IP (Internet Protocol) addresses. DNS translates domain names to IP addresses, which are used by browsers to load web pages. Without DNS, we would need to remember IP addresses, rather than human-readable addresses. For example, we would need to enter into the address bar, rather than

Windows Shell Experience Host Causing High CPU Usage

Windows Shell Experience Host Causing High CPU Or Memory Usage. How To Fix It

Windows Shell Experience Host is an official part of Microsoft Windows operating systems and responsible for displaying universal apps in a 'windowed' interface. It is also responsible for controlling graphical elements of the interface such as Task Bar visibility, Start Menu, and other visuals. If you have a changing background (perhaps from selecting a slideshow as the background), the Windows Shell Experience Host controls this desktop background behaviour. This process does not usually take extensive CPU or memory resources, but some users do report this problem.

Firefox Uses Too Much Memory - How to fix?

Mozilla Firefox Is Using Way To Much Memory. How To Fix It?

Mozilla Firefox is one of the most popular open-source web browsers which was known as Phoenix at first and it was a browser that contained features like download manager or tabbed browsing when these features were not present in other browsers. The newest version of Mozilla Firefox is called Firefox Quantum and it is a version number 60. Mozilla Firefox is a great web browser that offers a great number of various features and customization options and it is designed to be a fast and secure web browser. However, while the Mozilla Firefox browser's performance is excellent, it could slow down your computer and use too much of your computer's memory.


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