Computer does not start properly

The hardware caused the failure of the fatal, of course, this situation will not happen without reason. If you are using the computer in the normal way, the probability of this happening is almost zero. As a result, this failure is most likely due to a faulty operation or the aging of the hardware. For example, upgrade BIOS failure, the computer's thermal equipment damage, and so on.





one, due to the motherboard, the failure to display such failures are generally due to the motherboard damage or CIH virus (is not only the attack on the hard drive of the boot zone and partition table, but also damage computer systems Flashbios chip System program, causing the motherboard damaged a virus) caused by damage to the BIOS. The general BIOS is destroyed after the hard disk data will be lost, is that we can detect the hard disk data is intact to determine whether the BIOS is damaged, there are two reasons for this phenomenon.





1. Due to a problem with the expansion slot of the motherboard or the expansion card, the motherboard is not responding without a display after inserting an expansion card such as a sound card. 3lian.com





2. For the current jumper-free motherboard, if the CPU set in the CMOS frequency is not correct, it may also cause the failure to display, we just clear the CMOS can solve the problem. Clear the CMOS jumper is typically near the lithium battery on the motherboard, its default position is generally 1, 2 short circuit, as long as it is changed to 2, 3 short circuit a few seconds to solve the problem, for the old motherboard if the user can not find the jumper, as long as the battery off, beginning to display into the CMOS settings and then shutdown, The battery can be reinstalled to achieve the purpose of the CMOS discharge.





for faulty motherboard BIOS damage, we can plug in the ISA video card to see if there is no boot screen, you can update your BIOS floppy disk, refresh the BIOS, but some BIOS is damaged, the floppy drive can not work at all, at this point can try to use hot plug method to solve. However, this may cause some parts of the motherboard to be damaged, so a reliable method is to write the BIOS update file in the BIOS with the write code. For faulty motherboard damage, for previous old motherboards, it may also be because the motherboard after a long battery leakage caused by the circuit board moldy, so that the motherboard can not work properly, so that we could thoroughly clean to see if the problem can be solved, this method can also make the main board of the socket contact problems are resolved.





Below we also open the cleaning method: Use the tool to unplug the bios,coms battery on the motherboard, then use the hard hair brush, washing powder, to its various parts thoroughly clean, brush off the dust, finally can flush clean with tap water, wait for the motherboard shade and then try again.





second, the mouse failure caused the system to not start





system started to appear in the system when the screen, but the hard drive does not read the disk, do not send into the system, Safe mode can not enter. The CMOS setting Weo defaults and reboots, and the failure is still unresolved. Check C:modos.sys file, everything is OK. Restart the machine, press the F8 key to select the second "Loggen", still unable to start. Open the hidden file "Bootlog.txt" in the C-packing directory and discover that the last time the system was started failed when the Mouse.drv file was started. Follow the prompts should remove the mouse, reboot the system, all normal. Change a new mouse, you can use the normal.





This shows that sometimes some hardware failures can cause software failures, such as when the system can not start, open the Bootlog.txt file to look at, to determine exactly where the problem, and then targeted to operate, it can be very good to discharge the fault.





third, the CPU socket oxidation led to black screen





Boot black screen, in addition to the monitor, power and hard drive lights, no interest. The monitor is checked on another computer and everything is OK. Open the chassis, all the cards and memory to check and plug each one, boot failure still exists. Therefore most likely is the graphics card, the motherboard or the CPU has the problem, next I check. First replaces the CPU with the replacement, the boot computer is running normally, it seems that the CPU is broken. So the bad CPU changed to wait for repair, but after a day to boot, the computer and everything running normal. Try to run the program as if none of the problems have happened. How does the CPU still automatically fix it? It's really hard to figure out, but it didn't last long, and then there was the same problem as before. With the last experience, it may not be the CPU problem, then, is it due to the CPU socket or pin contact caused by the fault? So, remove the CPU wiped a bit and reload to the computer and then boot, the problem immediately resolved, this confirmed our judgment. Originally, due to the possibility of this computer's motherboard work is relatively poor, a long time CPU socket oxidation, increased CPU socket and motherboard pins between the contact resistance, resulting in the CPU is not working properly and black screen. Later, after the friction, so that the oxidation layer of the pins disappeared, the computer can work properly again.





Four, boot no display





the computer is turned on, the monitor is not displayed and is still dormant.





this may be caused by poor contact between the memory and motherboard memory slots. Either the memory stripe is damaged or the motherboard memory slot is damaged and may cause this failure to occur. If the contact is bad, then just pull out the memory, with the eraser back and forth to wipe the memory gold finger parts can solve the problem. If the memory is corrupted, it will only be replaced to solve the problem. Also, as a result of the memory of the failure of the boot does not display, the host's prompt horn general time to tweet. There is also a general video card contact bad or damaged may also cause this fault occurred.





v. Computer failure caused by battery damage on the motherboard





When the system starts, when you open My computer, it reports that the device is unusable and requires that you restart the computer. When restarted, it sometimes works properly and sometimes goes into safe mode. If you enter Safe mode, restart your computer again and you will be able to work properly. After normal operation, whether hot start or cold start will appear above problems. Use a variety of anti-virus software are reported no virus, reload system can not solve the problem. The back of the power, change the memory can not solve the problem. In fact, the computer is in a long time after shutting down the work can not be normal operation, so it may be the motherboard on the bios of the battery voltage is too low, and replaced the new motherboard battery, all problems have been resolved.





is not present until after a long shutdown due to a failure. This allows us to analyze the reason: Some drivers need to be set in the BIOS in order to take effect, after a long shutdown, because the battery has been damaged, the BIOS settings can not be retained, resulting in some devices can not be used, when the computer restarted, The device driver also sets the parameters in the BIOS so that the machine can function again.