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Lenovo S21e-20 Troubleshooting

Released January 2015, identified by model name 80M4.

Laptop Turns On and Off By Itself, Without A Display Appearing ¶ 

The computer turns on, but then turns off by itself, and repeats this, without a display appearing.

Memory Failure ¶ 

The RAM may have failed and needs replacing, or be loose and needs to be reseated.

Motherboard Failure ¶ 

If the RAM has been reseated/replaced and the problem is still happening, then the motherboard is not working, and needs to be replaced.

Laptop Makes Rattling or Grinding Noise While Running ¶ 

When the laptop is on, there’s a strange rattling or grinding noise happening.

Faulty Hard Drive ¶ 

If the cooling fan is not spinning, and the noise is persisting, the hard drive is probably the cause of the sound, and needs to be replaced.

Faulty Cooling Fan ¶ 

The cooling fan may be dusty, or needs to be replaced. If the fan is dusty, use a compressed air duster to blow the dust off of the fan. If this does not resolve the issue, try replacing the fan.

Battery Will Not Charge ¶ 

The battery is not charging while plugged into the charger.

DC Power Connector Failure ¶ 

If the battery charges when the laptop is plugged into the power adapter, but only after the power adapter is adjusted, or in a certain position, then the DC power connector has failed and needs to be replaced.

Battery Failure ¶ 

Try reconnecting the battery, by removing it and replacing it. If the battery still doesn’t charge, remove the battery, and plug the laptop into the power adapter. If it runs fine while plugged in, then either the battery or the motherboard are faulty and needs to be replaced.

Motherboard Failure ¶ 

If the battery is not the cause of the problem, the motherboard will need to be replaced.

Distorted Image or Strange Colors Appearing on the Screen ¶ 

The image displayed on the laptop screen is very distorted, or there are strange colors appearing.

Video Cable Failure ¶ 

Test the laptop by plugging it into an external monitor. If the image on the screen is normal on the other monitor, then the video cable may not be properly connecting to the motherboard, or needs replacing.

Graphics Card Failure ¶ 

If the distorted image persists when the laptop is plugged into an external monitor, then the graphics card has failed and needs to be replaced.

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