Why is the computer not working? This is a question that each of us has faced at least once. The causes of computer malfunctions can be very different—from hardware to software issues. In order to properly identify the problem and, even more importantly, repair the device, the first and most important step is correct computer diagnostics. It is precisely during professional diagnostics of a computer and its related devices that a specialist determines the cause of the computer malfunction.
What are the most common computer malfunctions and their causes, and what solutions do specialists provide? We will try to answer these and other important questions in this article.
To better understand problems with computers and related devices, first let us establish one important fact: in order to understand how this complex system works, it is necessary to distinguish between its hardware and software components, also known as “hard” and “soft” components.
Hard (from the English word hardware—“hardware” or, colloquially, “metal”) refers to the electronic and mechanical parts of a computer that are part of the network or system.
Soft (from the English word software—“software,” abbreviated as SW) is the collection of all programs, regulations, and relevant system documentation required for processing information.
Accordingly, the problems that arise in a computer can also be hardware- or software-related, depending on the type of malfunctioning component.
As a complex system consisting of hardware and software components, a personal computer can malfunction due to either defective hardware components or a malfunction of one or more software components.
Let us discuss the most common problems encountered in hardware components, their causes, and possible solutions.
According to computer service specialists, the most common hardware problems are:
When the processor malfunctions, the computer continuously shuts down and restarts. The system “freezes,” as a result of which the computer’s hard drive does not start. Naturally, the operating system (Linux, Windows) does not start either. At the same time, the processor may also overheat. The main cause of processor malfunction and, eventually, processor “burnout” is improper computer assembly. For example, processor cables may be bent during assembly, which can later lead to a short circuit and damage to the processor. Unfortunately, the solution is to replace the processor. In addition, a malfunctioning processor should never be installed on a working motherboard for testing purposes. Such a defective processor can also damage the motherboard.
The main sign of a computer memory malfunction is the constant appearance of the blue screen. There are tests that can be used to diagnose RAM. However, low-validity testing programs do not reveal all problems. Testing is performed only on a motherboard equipped with a memory controller. If the controller is located on the processor, it is necessary to make sure that the processor is also functioning properly.
If a memory problem is detected, the memory module is replaced; repairing it is not worthwhile.
The main reason a computer does not turn on is a malfunctioning motherboard. Due to a motherboard malfunction, even if the computer turns on, only the cooling system may operate while the remaining components do not start. The keyboard and mouse do not work, and the operating system does not load either. In this case, the processor also overheats. Motherboard repair is one of the most expensive types of computer repair. In some cases, individual damaged motherboard components can be replaced, such as swollen capacitors. However, in most cases, the entire motherboard is replaced.
The main sign of a power supply malfunction is an interruption in the power supplied to the motherboard. When the power supply is damaged, computer components may operate intermittently or may not start at all. Repairing the power supply is generally not considered worthwhile because the cost of repairing it can be comparable to purchasing a new one.
One of the most common computer problems is hard drive failure. This can be identified through the BIOS: the hard drive simply does not appear in the list of installed devices. When the hard drive malfunctions, the computer repeatedly restarts in a boot cycle. As a result, the Windows operating system either takes a very long time to load or does not load at all, while programs terminate unexpectedly. A hard drive malfunction can be caused either by damage to the drive itself or by incorrect or damaged connections of the drive cables. In this case, the connector connected to the motherboard is replaced. The hard drive itself can also sometimes be repaired, but as soon as problems related to it appear, it is better not to take risks: important data should be transferred to a new hard drive.
When there are problems with the video card, various strange symbols, spots, and other visual artifacts appear on the computer screen. Moreover, this can happen even before the system finishes booting. When the video card malfunctions, its driver may repeatedly fail, which can also cause the device to overheat. To protect against such malfunctions, it is necessary to regularly clean the cooler and cooling radiator.
One of the most unpleasant and common computer problems is spilling tea, coffee, or another liquid on your laptop. The income of companies providing computer services would probably be more modest if laptop users knew the “first aid” rules for a device that has been accidentally exposed to liquid. So, suppose your cup is half full of tea/coffee (you can continue the scenario yourself), while the other half is now inside your computer. What should you do before the “emergency service” arrives?
One of the main causes of system unit overheating is blockage caused by dust. As an ideal thermal insulator, dust disrupts air circulation inside the system unit, leading to processor overheating. As a result, the cooling system may be damaged, the fan bearing may wear out, the video card may burn out, and so on. To avoid such problems, specialists recommend regularly removing dust from and cleaning the system unit.
A significant portion of computer problems is related to improper interaction between software packages, the operating system, and various software components. Computer service specialists identify a number of common software problems for which customers seek their assistance with troubleshooting or maintenance. In addition to installing various types of software packages or operating systems, software-related problems include file system errors, problems caused by viruses, incorrect operating system operation, as well as malfunctioning or corrupted applications and drivers.
The main areas of software maintenance are:
Installation and configuration/troubleshooting/adjustment of operating systems.
Let’s discuss some of the most common problems.
In the 21st century, no one is immune to becoming a victim of cybercrime. Software disruptions affecting computer operation can be caused by viruses or other malicious software intrusions. Modern viruses are more dangerous than earlier types of malware because they have “learned” to block antivirus software and prevent its installation. For example, an SMS virus blocks the computer screen, making it impossible to launch any program. It is impossible to deal with such viruses independently, as their removal requires system-level actions and a professional approach.
Operating system installation/configuration and troubleshooting
Operating system-related issues can vary from system errors that cannot be fixed within the system to removing an old operating system and replacing it with a new one.
The causes of problems in an operating system can also vary:
One of the common software-related problems is the malfunction of a printer or another peripheral device. For example, suppose that after giving the print command, the printer does not work. There may be several possible causes:
Whatever problems you may have with your computer, it is clear that it is advisable to use the services of specialized professionals or companies for computer maintenance.
Such individuals or companies provide a wide range of services in the field of computer hardware and software maintenance and, thanks to specialists with different areas of expertise, can help solve any problem quickly and effectively.
Varpet provides high-quality computer repair and comprehensive maintenance services. Problems can be either hardware- or software-related, and Varpet’s computer specialists can resolve both technical and software issues.
If you experience any hardware or software problems with a computer of any brand, you can book a service through the Varpet app. Our computer specialists will perform diagnostics, identify the problems, and offer solutions, while determining the repair cost and estimated completion time.
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