Lenovo computer turns on with a yellow light and can t be turned on

If there is too much dust in the machine, and the contact is poor and causes a crash, check the CPU and graphics card heat dissipation, dust removal, oiling, or replace the fan, you can clean the chassis and plug all the connections tightly.

If the screen is not displayed after turning on, it may be that the cable connecting to the screen is loose, as long as you find the cable connecting to the screen and plug it in, if you repeatedly plug and unplug the memory screen and still does not light up, it cannot be turned on, it may be that there is a problem with the graphics card. If it is a discrete graphics card, it can be plugged in.

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Dear Lenovo users, the general indicator light is yellow, usually represents the battery is insufficient, you can plug in the power supply, try to turn it on, if you can't turn on the power plug in, it is recommended that you try to reset the operation attempt: unplug all the external devices of the host (including the power cord and battery), press and hold the power button for 30 seconds, and then connect all external devices to power on the test. If it still doesn't work, it is recommended that you go to your local Lenovo service station to test it, and the service station staff will solve the problem for you.

Lenovo service station inquiry:

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Lenovo Community.

Method 1: Unplug all the wires behind the host, do not connect the power, and then press the switch 10 times to discharge the motherboard;

Method 2: If the power supply fan and CPU fan can be rotated, you can plug and unplug the memory;

Method 3: If the power supply fan does not rotate, but the host light is on, it is caused by the motherboard, you can try after clearing the CMOS, if it still doesn't work, it needs to be repaired.

If the memory module is loose, or the system is problematic, insert the memory module now, and reinstall the system if it doesn't work.

You first see if the CPU fan is rotating, if it doesn't rotate, it means that your motherboard is not powered on, in this case, it is best to find Lenovo's after-sales service center.

You don't describe it in too much detail, according to what you are talking about now, it may be a power supply problem, and it may be a CPU fan problem after turning on and automatically restarting, and it can't dissipate heat in time.

There are many reasons why your computer won't turn on:

1. It may be that the memory module is loose, plug and unplug the memory module again, and then try to see if it can be turned on 2. There may be a problem with other hardware aspects of the computer, resulting in the computer not being able to boot up and use normally. In terms of hardware, it is recommended to go to the computer after-sales outlets, or professional repair shops for testing**There is a problem, resulting in not being able to turn on.

Normally, there is a problem with the memory, or other hardware is damaged. It is recommended to check the memory module first, and if it still doesn't work, check for other hardware problems. You can go to a professional computer store to test.

It is recommended that you try to change the power battery first, if it still doesn't work, the parts of the machine itself are loose or the chip is damaged by virtual soldering, common reasons: the memory is loose or the memory itself is problematic, reinsert the memory or change the memory to try; The power supply chip of the motherboard is soldered or aged, the screen cable is loose or the motherboard short-circuits the power supply circuit of the screen; Graphics card, south bridge, north bridge BGA packaging chip virtual soldering or damage, generally there are more virtual soldering, just add soldering.

Put your hand on the fan position behind the case and feel if the downwind stops for a while and starts for a while. If so, it should be a memory module problem. Power off first, and then open the chassis cover.

Remove the memory module and wipe the gold finger, which is the golden metal part. Then go back to the memory module. Turn on the power supply and turn it on to see if it can start normally.

If that doesn't work, try powering off and removing the motherboard's coin cell battery. Wait for about 1 minute, put it back on, and see if it can start. If it doesn't work, it may be a power issue with the host. Secondly, other issues.

Re-plug the display data cable and check whether the cable is plugged in.

Unplug all wires and plug them back in.

According to my guess, there may be a problem with the power adapter. If you have a power supply for the same notebook, plug it in and give it a try. Or use the battery to see if it works. Generally speaking, it is rare for a laptop to fail to turn on because the power button on the boot is broken.

In addition, I think your problem is likely to be the motherboard of the notebook, especially the power supply IC in addition to the fault, a slight change of parts can be, the worst budget is less South Bridge chip. This motherboard is only within 300 years, if yours is not a top-of-the-line flagship notebook.

The data can be taken out at any time, you can rest assured. The data is all on the hard drive, and it stands to reason that it is still intact. As long as you remove the hard drive, you can connect it to another computer to continue using it.

Dear Lenovo users, hello!

If your boot screen does not light up, you can try to reset the operation, if it does not work, send it to the local Lenovo service station.

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The yellow light is a power indicator, indicating that the motherboard will be powered on, and then the screen is not displayed, indicating that the host has not started normally, and the problem is with the host. The most common reason for host failure is that the memory module and graphics card are loose, if it is a contact problem with the graphics card, there will generally be two audible alarm sounds when booted, you can also rule it out if you don't say it; All that's left is the memory failure.

Exclusion method: In this example, a desktop computer is used as an example. (First** desktop memory, know what it is) first cut off the power supply of the host and then disassemble the chassis, unplug the memory, boot up if the motherboard is normal, you will hear a continuous tick alarm, if you can't hear the motherboard failure; Confirm that the motherboard is normal, re-insert the memory or change it to a bad plug, pay attention to the installation position of the memory module, do not plug it in, there is generally a dumb-proof design, observe it carefully, otherwise it will not be turned on, and the device will be burned out!

After installation, start the machine, until the boot is successful, this process has no technical content, only need to be careful and patient!

Well, it's the day dog.

Take a look at the CPU cooling fan on top of your motherboard and clean it up if there's any dust.

Then observe your motherboard, the capacitors on it, whether there is a drum phenomenon (pulp) to see your problem, the motherboard is the main consideration.

It is recommended that you only power on the motherboard, CPU, and memory module to see if there is any response, and use the elimination method to determine the hardware cause. Hope it helps!

Desktop, right, if you clean and clean the memory and graphics card after the finger is still not good, it is recommended to unplug the optical drive and other unused hardware power cord, and then boot it to try, sometimes there is a little problem with the power supply, and sometimes this phenomenon occurs in computers that take a long time.

The same problem as the landlord.,Press the start.,The red and yellow lights have been on.,Throw that still.,After a random period of time.,When the host is in a good mood.,I'll start it.。 This problem also depends on the mood of the host and occurs randomly. Clean up the gold finger to change the memory and change the graphics card or something, don't say it.,It's all done.,It's useless to be in a hurry.,Turn on the phone and see if it doesn't start.,The double lights are always on.,I'm busy with something else.。

Connect the monitor to another computer to see if it's broken, try to change the cable to see if it's a cable problem, and if it still doesn't work, try to plug and unplug the graphics card.

First clean up the computer dust, and use the memory module to eraser

The VGA cable is gone, buy a new one and try it! ok！

Buckle the lithium battery and press it again after a while.

It's out of battery and the battery is low.

The computer is turned on but the display screen does not light up, these reasons will teach you how to solve it!

If nothing is displayed, there is a problem with the graphics card Replace it.

It is recommended to disassemble the main machine, remove the memory with an eraser, wipe it, and then clean up the card slot, it may be dust.

Unplug the memory module and erase it with an eraser.

The computer can't be turned on: 1. It may be that the battery is out of power, and the power supply is connected to turn on again.

2. It may be that the charger cannot be powered on when connected, resulting in the computer not being able to turn on, and a power supply device can be replaced.

3. There may be a problem with other hardware aspects of the computer, resulting in the computer not being able to boot up and use normally.

For hardware problems, it is recommended to go to the computer after-sales outlets, or professional repair shops for testing**There is a problem, resulting in not being able to turn on.

The yellow light flashes at the button of the computer but it can't be turned on because the memory module is dirty and can't start normally. For this kind of problem, in fact, the solution is very simple, just pick out the memory module and wipe the golden metal strip, and then plug it back into the motherboard, if not, you can wipe it a few more times, and the problem will be solved quickly.

The memory module is shown below:

A memory module is a part of a computer that can be addressed by the CPU and can be read and written. Memory modules used to be an extension of the main memory in the history of personal computers. With the continuous update of computer software and hardware technology, memory modules have become the whole of read and write memory.

When we talk about the size of a computer's memory (RAM), we refer to the total capacity of the memory module.

Memory modules are an essential part of a computer, and the CPU can address the memory through the data bus. Historically, computer motherboards had main memory, and memory modules were extensions of the main memory. Later computers will not have main memory on the motherboard, and the CPU will rely entirely on memory modules.

All content on external memory must pass through memory in order to function.

There are two types of memory modules: DRAM and ROM, the former is called dynamic random access memory, and data will be lost after power failure; The latter is called read-only memory, and data will not be lost after a power failure.

1. It is recommended to change the power battery first, if it still doesn't work, the parts of the machine itself are loose or the chip is damaged by virtual soldering.

2. The common reason is that the memory is loose or there is a problem with the memory itself, reinsert the memory or change the root memory.

3. The power supply chip of the motherboard is soldered or aged, the screen cable is loose or the motherboard short-circuits the power supply circuit of the screen.

4. The graphics card, south bridge, and north bridge BGA packaging chips are soldered or damaged.

Can the keyboard be turned off normally after booting?

In this case, it is directly related to the hardware, and it is recommended that you perform the following operations:

1. Remove the battery on the back of the notebook, connect the computer with only the power adapter, and try to turn on the computer, if the boot is normal, then it is caused by poor battery contact or battery failure.

2. Only use the battery, do not connect the power adapter, if the boot is normal, then it should be caused by a problem with the power adapter or a short circuit in the power interface of the notebook.

3. Unplug the power cord, remove the battery, and press and hold the power button for 30 seconds without letting go. Try to boot up, if the boot is normal, then it is only caused by the abnormal BIOS of the motherboard.

4. Unplug the power cord, remove the battery, open the back cover of the memory, plug in and unplug the memory, wipe the gold finger part with an eraser, and plug it back in (don't reverse it).

5. If the above operations cannot solve the problem, it is recommended that the notebook be sent to the maintenance center for testing.

Do you see if there is a problem with the power supply and the light of the power adapter is on? If the light is not on, it means that the adapter is burned, if the light is on, it may be a contact problem at the power interface, and the light is flashing may be the battery is running out (maybe you have been using the battery before), if there is other information, then say.

1) First remove the battery, unplug the power plug, press and hold the power button for about 5 seconds, then plug it in to see if it can be turned on, if it still can't be turned on, continue the following steps.

2) Remove the battery, unplug the power plug, use a Phillips screwdriver to open the back cover screw, there is an opening on one side of the cover, use a screwdriver to gently the cover along this opening, and then you can remove this cover.

3) After removing the cover, find the memory module, use a screwdriver to gently remove the clips on both sides of the memory module, so that the memory module can be released, gently remove the memory module, wait for a while and then put it back on.

4) Cover the cover plate in reverse according to the disassembly method, install the battery, and turn on the power button to restart.

Dear users, hello!

Due to the large number of faults you described, we may not be able to give you an accurate answer, so we recommend that you try the following operations.

1. Confirm whether the computer is powered on, install the power adapter and battery, and press the power button to observe whether the power indicator is on to confirm whether the host is powered on.

2. It may be caused by static electricity, confirm whether the computer is booted without display (black screen but with backlight or no backlight), observe whether the hard disk is just flashing after booting, if the hard disk indicator light is not on, you can turn off the power adapter and battery, press the power button 3-5 times and then try to boot again.

3. Caused by system crash, it is recommended to use one-click recovery to try to restore the system (if there is important data in the C drive, do not use this function).

4. Caused by the host hardware, you may not be able to operate due to the hardware.

It is recommended that you immediately send the Lenovo service for testing to avoid fault escalation.

This connection can query the Lenovo service location.

Hello: The laptop power flashes yellow light and can't be turned on, it is estimated that your Dell computer has a hardware failure problem, it is recommended that you contact the after-sales department to serve you.

You can call Dell's after-sales service** consultation: fixed** dial 800-858-2969; Call 400-886-8610 from your cell

Dell Workshop Tracking** for you

The host can also light up yellow...

You're talking about the monitor lighting up yellow (that's still orange...). First see if the cable of the monitor is connected normally, whether it is loose, and look at the socket on the back of the computer and the socket under the monitor.

If the memory is unplugged and useless, if there are 2 memory sticks: just plug one in first and try to see if there is only one memory stick, then change the slot, and by the way, use an eraser to erase it or not: see if your computer has a discrete graphics card, replug it in, or not.

Unplug the graphics card and plug the blue line of the VGA port of the monitor directly into the motherboard (provided that your CPU or motherboard comes with a centralized display).

I don't understand, thank you.