In the life of any person there may come a moment,when his faithful PC refuses to work anymore. This is not an excuse for panic, in most cases a simple computer diagnosis can solve the problem. Independently to hold it will not be difficult.
The first call about a system malfunction can beget it immediately after turning on the computer. The motherboard should give a single sound signal, which indicates the system's performance. If there is any malfunction, then there is a whole table of combinations of audio signals, which allows you to immediately identify the source of the problem. For example, 8 short beeps will alert you of a video card malfunction, and 3 beeps indicate a malfunction of the memory module. Hearing uncharacteristic sounds from your system unit, do not immediately carry it to the service center, you may need to simply clean it from dust. The list of signals can be viewed on the Internet.
If the coolers on the system unit are turned on, butthe bulbs on it did not light up, not a single sound was heard, and a frightening blackness appeared on the screen of the monitor, then most likely you will have to change the motherboard.
If after turning on the system unit, nothingthere are probably two options: either the power supply unit has been burned or you have switched off the electrical energy. Replacing the power supply will not cause any problems. This is a fairly simple process.
Computer diagnostics continue if afterthe system issued one short signal, the BIOS considered all the basic physical parameters, such as memory, the number of hard drives, etc., then you can be sure that everything is in order with the "hardware".
Another possible reason for PC failure is the problem indisk system. If an inscription appears on the monitor like "Non system disk or disk error", then think about it several times before proceeding with the recovery. Incorrectly performed computer diagnostics can lead to the failure of the entire system as a whole, as well as to the loss of all personal data on the hard disk.
First, you need to enter the BIOS and check,determine whether the hard drive. To enter immediately after starting the download, press the "del" key. The structure of the BIOS is diverse, but the very first menu always indicates all the connected and used storage media, the current time and date. If the hard drive is listed there, then simple computer diagnostics here will not help. It will be necessary to use various applications, through which the computer is diagnosed. The program scans the disks and finds in them the "broken" sectors, which are then restored.
If the system boots, but the quality of its workdoes not suit, then the computer diagnostics will help you in time. There are a lot of different applications, such as Tun eUp Utilities or Norton Disk Doctor, which can quickly and accurately check hard disks, system, registry and other areas for problems and errors. Modern programs that diagnose a computer can run in the background and in most cases do not require user participation.
Summing up, it can be noted that not every malfunction in the PC should provoke a trip to the service center. Time spent diagnosing a computer can save you time and money.