How can I tell if the motherboard BIOS chip is bad?

If it's broken, it can't post self-test, silent without image, a dark

Does the CPU fan go? Does the monitor light?

If the BIOS is broken, then your motherboard is not turned on, so the monitor is definitely not lit, CPU fan as long as your motherboard can still power words are able to turn, with the BIOS does not matter,

CPU bad is nothing to show

No memory, no CPU can also start the host power, if the BIOS is broken, there is no way.

It is difficult to determine whether the BIOS is normal, because without a test tool such as a programmer, it is impossible to judge whether the BIOS file or the chip is normal through the senses, for ordinary users, only find a maintenance provider to solve. China Maintenance Forum I:O5C x2d

If the screen displays the BIOS ROM checksum Error-system halted (the BIOS program code finds an error in the sum check (checksum), the checksum sum fails when the BIOS is read, so the machine cannot be restarted. This problem is usually caused by incomplete BIOS program code updates, and the workaround is to brush the bios of the motherboard to burnout.

Look at the detection card of EB-C0 and other general garbled

If you can't find it, brush the BIOS first.

Some will also display BIOS errors after boot

After the brush BIOS failed, the test card ran 41

Now everyone long use of the detection card on top there is a BIOS light, if the BIOS is broken, the lights will not light

Detect the BIOS of the 22-foot plate selection signal, and the voltage of the supply foot ~ ~