Receiving customer repair Lenovo B31R3 machine, B305 board, such as fault map, boot Baocuo

Picture error translation:

The first line: FAN fail 0135:GPU,

0135:GPU fan fault

The second line: checksum bad cmos,

CMOS calibration and error

The third line: mismatch detected cpu,

No match detected

The fourth line: error system... Halted fatal

Fatal error...

After the translation that, the first line is wrong for the graphics card fan problem, then check the graphics card fan, such as

Graphics card fan and the dust is blocked, so replace the graphics card fan, boot test, reported the following error

Then the error, but also the machine common fault, Southbridge chip problem, caused by the problem for cooling is not good, so the maintenance graphics chip, processing machine cooling problems. Machine repair