How to judge the laptop motherboard is broken

How to judge the laptop motherboard is broken

Turn on the fan but the monitor does not show, it is possible that the memory strips loose, wipe the gold fingers with the eraser after plugging the boot up to see how the situation, if the failure is still likely to be the motherboard is broken.

Press the boot key does not boot or no response/motherboard power needle Short connection also has no response, may be North Bridge burned, of course, if the host tick beep beep, you can Baidu based on the noise to judge the host where the problem. In this case, the problem with the motherboard can also be resolved.

Boot after the BIOS display garbled, this situation is usually the motherboard on the capacitor is broken, maintenance costs are not high. You open the chassis to see the motherboard on the capacitor drum up or leaking slurry, call JS to replace on the line.

Unplug the device from the CPU and memory to boot, see if there is a display, and listen to the motherboard there is no alarm sound, if there is no alarm sound (except for the buzzer), it is most likely that the motherboard is broken, if the fan does not turn, remove the CPU rub Gold fingers reset boot (pin the Don't rub ha, For INTERCPU), if the CPU fan still does not turn, it may be that the motherboard is broken and does not recognize the CPU

None of the above can give you the final answer, then buy a motherboard diagnostics card bar, more than 10 dollars, plug into the pci-e slot on the boot to see the running code can know what the problem is the motherboard.

I hope it will help you.

Add: Remember to check the host power supply is damaged Oh! The test method is the green black short connection, the power supply fan turns the power supply is good, does not turn indicates the power supply has been bad.