Advice 1: How to determine the fault of the computer

Computers are firmly entrenched in modern life. This – and working place, and means of communication, and the best holiday for many millions of citizens of the XXI century. The worse is the situation that the dispossessed owner of this achievement of high technology describes a capacious phrase: "My computer died!" Fortunately, it is not always the situation is so fatal. Sometimes it is enough to replace the faulty item to return your computer performance. How do you determine the fault of the computer?
You will need
  • computer;
  • - Phillips screwdriver.
You turn on the computer, however, on the front panel of the system unit does not light up the Power indicator, you do not hear one short beep, no fans spin on the PSU and on the CPU. This whole sad picture – evidence of power problems. Check if there is power at the outlet. If the computer is connected to the outlet through the pilot, make sure the pilot is turned on. If OK, unplug the electrical cable from the electrical outlet and from the power supply, and then connect back and try again to turn on the computer. If nothing has changed, unplug the system unit from the power supply, remove the side panel, disconnect the power supply from the motherboard and bridge the green and black pins with a 1K resistor. If the power supply does not start, then the problem is in it.
If the power supply is OK, disconnect everything from the motherboard except the processor. Connect the power supply and run the computer. If the power supply is turned on and to turn the cooler on the CPU, then the problem is in one of those devices that you disconnected. Connect them one at a time, starting with memory modules, and see when the computer will again cease to be included – thus you will find the faulty device. It is not excluded, however, that it will work – not surprising, as we know, electronics is a science about contacts.
If you disabled the devices the computer will not start, Unscrew the screws which the motherboard is attached to the body, and remove it. Put the fee on the table, connect to the power supply and try again to run. If the power supply is started, perhaps, between the housing system unit and the motherboard in some place there is a short circuit, or the Board has a hairline fracture, which manifests itself when the cost of tightening the screws.
If when you turn on the computer, lit up LEDs and spin the fans, but the system will not boot and the system unit is not beeping, check the BIOS battery. If the voltage is less than 3V, it is better to replace it.
Reset the BIOS, perecnuu screwdriver contacts where the battery. Inspect the capacitors on the motherboard – among them should not be swollen and soggy. Perednia power connector on the Board.
If the inclusion of dynamics there was not a single short beep, and long and/or short signal, then the faulty one. Every manufacturer has appointed for his own equipment audible alarm. If you have no tables in which stands for the value of "beeps", try to take action yourself. Disconnect the computer from power remove the side panel, remove memory modules and clean their contacts a regular school eraser. Do the same with the video card. Insert the equipment into the slot firmly until it stops. If you have multiple memory modules, insert them one at a time – perhaps a faulty one of them.
If your computer is normally turned on and from the right speaker is heard a short beep, but the monitor is blank, turn off the computer and politcnica interface cable. If not, perhaps the interface cable is faulty – replace it.

Advice 2: How to find fault of the computer

To disassemble and assemble a computer today can do everything. If show which of the components has failed, you should be able to replace it yourself. But the location of the faulty element is not always obvious.
Try to determine which of the components is out of order, the nature of the fault. For example, if the hard disk drive when you access a sector monotonously pounding, and the CD-ROM drive - ring, and after a number of attempts to read or write error occurs, obviously, failure of this device. To check the hard disk for presence of bad sectors, use a bootable CD-ROM with the program "Victoria".
If during the operation of the programs crashes, and, even when any drives missing, the fault lies with the memory modules. Check them out using Memtest86+. Removing the modules in turn (after turning off power to the machine), determine, with the assistance of this program, which of them is the cause of the failures. Replace only it.
If the screen has no image, the first thing to try is to temporarily replace the video card to another (also when de-energized the system unit). If the reason in it, the image will appear.
If the computer turns on, but no "signs of life", and then does not turn off by pressing power, even if long to hold her back, failed motherboard, and it happened due to a malfunction of the power supply, which began to produce excessive voltage on the supply line standby. The power supply serviced, and then get this motherboard that fits the old CPU - it is not burned.
In chaotic crashes and hangs inspect the motherboard for the presence of swollen capacitors. For their replacement refer to the workshop, since the Board is multi-layered, and even if you have soldering skills, but no experience with multilayer boards it is easy to spoil.
If there is no image, and built-in speaker makes sounds, find out what they mean by typing in the search engine following line:
(Name of BIOS manufacturer) the beep codes
Because in the absence of image to know the BIOS manufacturer on the screen saver on the screen is not possible, refer to the sticker located on the ROM chip or near it.
To accelerate the Troubleshooting of the computer purchase is called POST card. Its name is a pun: postcard - postcard, POST Power-On Self-Test card - expansion card (one of the values). It is set (also when the computer is off) to one of the PCI slots, and either shows fault code on the digital display, or its name on matrix. In the first case, it comes with a booklet with a description of fault codes. Sometimes this device is built into the motherboard.
Useful advice
Use tables BIOS beep, to more accurately determine the fault of the system unit
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