What to do if your computer will not turn on? If the power supply is OK, the motherboard provides a "teamĀ» CPU to start work.Chips CPU performs a self test and if everything is in order, then begins the process of initializing the computer.The initialization procedure is sewn into the BIOS.

If the processor (SRU) is defective, the initialization occurs.Fans and hard drives work, you can see that the PS / 2 keyboard and mouse under stress, but visually, nothing happens.

How to check whether faulty SRU? To do undock cooling fan connector CPU.You will see that in a very short time, the cooler will overheat.If this does not occur, then the processor is not all right.

should also check , whether basking north and south bridge chipset, memory module chips.These elements should be warm to the touch (check should be cautious).If a single element is not heated, then either it is defective, or the motherboard.

If the processor is serviceable, BIOS checks and initializes the system components ( POST ).First initializes chipset, then DMA, memory contro


If the processor is defective, it almost never be restored.The reason for failure of the processor may serve as a high temperature.If the processor is heated to 100-200 & amp; degS or the rated voltage is exceeded by 1.5-2 times, the processor will break in a few seconds or even fractions of a second.

if the processor chip is opened (this technology made the processors Pentium III, Athlon and all the Athlon XP), the processor is particularly "afraid" of mechanical damage.When you install the cooler on the processor should exercise extreme cautious.The slightest crystal cleavage enough to bring down the processor! not drop to the floor system unit!