Diagnostic programs for special purposes

Introduction

There are many different diagnostic programs for PC-compatible computers. There are special programs for testing memory, hard drives, floppy drives, video adapters and other system components. Some of them occupy a worthy place among such programs, others clearly do not reach the professional level. Programs aimed at users with intermediate training are not very carefully designed and lack many of the features necessary for professional work. In this course work we will focus on diagnostic programs.

Most test programs can be run in batch mode, which allows you to run a whole series of tests without operator intervention. You can create an automated diagnostic program, most

effective in the event that you need to identify possible defects or perform the same sequence of tests on several computers.

The diagnostic method is characterized by the object of elementary verification, the method of applying the impact and removing the response.

There are the following diagnostic methods:

1. Two-stage diagnosis

2. Sequential scan

3. Reference scan

4. Microdiagnosis

5. Diagnostics, focused on checking replaceable blocks.

The purpose of the course work is PC diagnostics. To achieve this goal, the following tasks are set.

1. Find out the possible cause of the PC malfunction.

2. Select a diagnostic program.

3. Find out the characteristics of the system.

4. Run diagnostics.

5. Get the result.

Chapter 1. Theoretical section

The main tasks of computer diagnostics

Diagnostics is a thorough testing of all computer components in order to determine whether their characteristics correspond to those declared by the manufacturer (seller), as well as to determine the actual performance (speed) and compare these indicators with reference equipment. Naturally, some functions of diagnostic, or, as they are also called, test programs can be used to identify equipment that is malfunctioning, but this does not mean that such programs are mainly used for troubleshooting.

Diagnostic programs allow you to determine the model, production date, characteristics of installed components without interfering with the computer device. This, for example, ensures that all components are brand new.

The need to diagnose a computer system

Diagnostic tools allow the computer to localize the fault on its own, provided that the diagnostic core is in good condition, that is, that part of the equipment that must be known to be operational before the start of the diagnostic process. When diagnosing a computer, the principle of expanding expanding areas is most widely used, which consists in the fact that on each diagnostic wane, the core and hardware of already checked serviceability of the device areas are means of test diagnostics, and the hardware of the next checked area is the object of diagnosis.

Chapter 2. Overview of diagnostic programs

Diagnostic programs for special purposes

Many types of special purpose diagnostic programs are designed for specific types of hardware. Such programs are supplied by manufacturers along with devices. However, the vast majority of solutions are created by third-party developers. For example, a small CPU-Z program (Fig. 1) reports the following information about the processor installed in the computer: name, manufacturer, core voltage, cache information, sets of supported instructions, etc., and in some cases the program can determine whether “overclocked “whether the processor or it is running at the factory frequency.

Rice. 1 CPU-Z program window

Another utility GPU Caps Viewer (Fig. 2) is designed for the graphics card, which tests it for performance, shows the current temperature of the GPU, OpenGL extensions, OpenGL API support information, and other characteristics of the graphics card.

Fig.2 GPU Caps Viewer window

The Memtest86+ program was developed to test and search for RAM errors (Fig. 3). For this program to work, you need to create a bootable floppy disk and boot the computer only from it, since the program takes up a meager amount of RAM. Of particular note is that it can run on both 32-bit and 64-bit systems.

Rice. 3 Memtest86+ program window

Among the many utilities for testing and accurately diagnosing hard drives, it is worth noting the Victoria program (Fig. 4). This is a multifunctional complex for testing, diagnosing, repairing and configuring hard drive parameters at a low level. Victoria allows testing HDD, FDD, CD/DVD, USB/Flash/SCSI drives under Windows via API and ports.

Main advantages:

· Display of full technical information about the drive;

· Work with a disk through ports;

·Support for IDE/SATA controllers;

9 tests to check the surface and “mechanics” of the disk;

· Creation and recording of a disk image;

·Check memory and HDD interface.

Rice. 4 Victoria window

There is a program for diagnosing monitors – Nokia Monitor Test (Fig. 5), designed to check the geometry, focus, contrast, color and other monitor parameters. It works without installation; all tests and settings are described in detail in the help attached to the program.

A large number of special-purpose diagnostic programs have been developed by Passmark: KeyboardTest – for mice and keyboards, ModemTest – for analog modems, BatteryMon – for laptop batteries, etc.

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