Analysis on the cause of unsuccessful computer boot

Some people will be turned on when the boot is not successful, need to reboot and other ways to complete the boot process, so more trouble, the following is summed up a number of possible reasons for this failure, I hope to help.

First, if it is a newly-purchased machine

Some people are new to buy a few days of the machine, because the start DIY when busy testing machine performance scores, installed operating system, computer, the old on the baking machine, did not find this problem. Until all settled down, only to find the boot failure. Most of the problems are caused by a conflict between your power supply and your motherboard or graphics card, or a lack of power supply.

1. AGP video card and power supply

Because now the AGP video card with the performance of the enhancement, speed, the required power is correspondingly large, coupled with the gradual reduction of hardware, a lot of people have installed a burner, two hard drives and so on, the whole machine may not be enough power, so the first boot is not successful phenomenon.

2, the motherboard bug

Another possible reason is that your motherboard design or BIOS has some bugs, because the ATX power supply, plug plus, the power has already started to work, and so you press the key, the motherboard because it is not able to provide the necessary power on the instant voltage, resulting in the first boot failure.

Reference to the solution: first to change the power of a large high-quality power, if it does not work, you can refresh the BIOS, no longer work, you can only try to shut down every time, unplug the plug, and then the next time the boot on the boot.

3, the chassis design is unreasonable

Some inexpensive chassis interior space is too small, the motherboard into the future, plus the hard drive, floppy drive and so on, oppressive reset key and power key position, may also cause these two keys can not be normal reset, resulting in abnormal boot. You can take the motherboard out of the chassis only add CPU and graphics card, memory check, if the normal boot, can be confirmed that this reason is undoubtedly, change a good chassis.

Second, the old machine or the problem after the upgrade

Some of the old machine, used to be normal, but suddenly this boot abnormal phenomenon, or upgrade a part (most common is a burner or hard disk) after this failure. The reasons may be:

1, the motherboard and the new hardware conflict

For the newly added IDE device, have a problem with the original IDE device to set the master and slave jumpers. On some motherboards, because of BIOS and architecture problems, the new hard drive can not be set as the main disk, otherwise it will not boot.

Reference method: Of course, try a variety of jumper access, until the stable way to find. Pay attention to the step-by-step approach and don't confuse the order.

2. ACPI management impact in CMOS

Some motherboards after the BIOS has been refreshed, the ACPI may be modified, or system optimization, inadvertently changed the ACPI management options, which may cause the power is not normal, the impact of startup, you can try the load default value to try.

3, the motherboard short-circuit or dust impact

Some motherboard welding workmanship is not good or installed when sloppy, just buy when you can make use of, but for a long time due to the abnormal contact of the parts of the battery quickly lose power, in the normal boot time often accompanied by the loss of CMOS information, new batteries are also very soon consumption of light energy. In addition, because some people to overclocking or remove hard copy data, the chassis is not stamped, do not pay attention to keep clean, accumulated too much dust, at this time may also lead to poor contact, power-on abnormal.

The solution is to check the motherboard of the plastic stent is off, resulting in direct contact with the motherboard and chassis, as well as the use of electrical tools to determine whether the motherboard has short-circuit leakage of the situation; clean up the dust, pay attention to the health of the location of the computer. Once I found a friend of the machine inside there is a cockroach excrement and has hatched the empty shell, apparently the cockroach damaged the internal wiring leads to short circuit, only to change accessories.

The above only for reference, if unable to solve can only help professionals to help.