Why does the Lenovo chassis not change the power supply The diagnostic card is 04 After changing the

You still go to Lenovo's after-sales service department I think this should be a software problem The following is the reason I hope it will help you.

Hardware:1Poor contact or poor compatibility of memory modules.

2.Unstable operation of the equipment due to poor board contact or quality problems3Poor hardware compatibility, which is common on non-branded build-compatible machines4

Poor cooling of the computer causes the CPU or graphics card chip to crash due to excessive temperature, including hardware design flaws, such as certain recalled graphics cards or computer parts.

Software: 1. The user is controlled by a remote Trojan, and everything on the computer is in the hands of hackers.

2.Viruses or malicious plug-ins invade the system, resulting in system damage.

3.The driver installed on the computer is not compatible, and the computer will crash after running for a period of time.

4.The compatibility of the software itself, the serious conflict between the software incompatibility and the system conflict, the computer crashes.

First of all, you have to determine whether your monitor can display, when the computer just opens the case, the basic information of the computer will appear, that is, the basic settings in the BIOS, and then jump to the operating system to boot, is there a display on the information screen at this stage?

1.Check if the cable connecting the console to the monitor is not plugged in, or if you have adjusted the resolution out of order, if this is the case, you will have to reinstall it.

2.Poor graphics card contact and memory check it out.

3.Check the line of the monitor and the main unit.

Thank you for adopting.

99% is a memory problem' It is recommended that you take down the gold finger 1 of the memory with a rubber band and then install it from the new, this problem is very common but very annoying,

I guess it's a sleep problem, not a crash, I guess I need to modify the settings in the BIOS, the power management problem, you first turn off the dormant ones, right-click in the blank space of the screen, in the display settings, you try to show the settings first.

To see if the memory graphics card is loose, remove it and use an eraser to erase the gold finger** and try it.

See if the monitor connector is not plugged in.

1.Remove the battery and turn on it with an external power supply, and the battery protection may solve this problem.

2.Plug and unplug the memory and take a look.

3.Report to Lenovo for repair.

Hello! You can first remove the battery, use the adapter to boot it alone, some batteries will freeze death, and then if you have strong hands-on ability, remove the memory and reinstall it, if you still can't turn on normally, find a professional to test it.

Is the graphics card broken, do you click randomly to hear if it has entered the system?

However, I heard that the power supply of many brand machines can only use their own brand power supply, there are two possibilities, one is that the chassis of this brand machine is a special size, the size of the power supply is not standard, and the other is that there is a fixed wiring method inside the chassis, and if you change the conventional power supply, the power supply line will not be plugged into your computer's chassis is standard, as for the internal layout of the chassis, I have not seen it, only from the first aspect, there should be no special design.

Buying a regular power supply will do the trick.

ps, have you done any upgrades to this configuration, if it is the original hardware, then there is no need for a power supply rated at 400W.

Lenovo's power supply is also made by others.

As long as your case is standard, there is generally no problem.

The interfaces are all the same, it's just a matter of one more and one less.

It is recommended to contact the local service station to get tested.

Service station inquiry:

First of all, now the vast majority of people are using pirated versions of the win7 system,There is no difference at all with the genuine version,Only the software activation is required,The function is exactly the same,My notebook is Samsung,Configure the NV card GT330M on the win7 can be perfectly driven,So the problem of the graphics card that the landlord said is not there,I can only say that the version you use is not right,It is best to use the latest flagship version,The system is complete,Powerful,According to the landlord's words,After comprehensive analysis, it is recommended。

1 Turn off the laptop and completely cut off the power for a few minutes.

2 Reboot the computer again to enter the BIOS settings, check whether the graphics card settings have been changed, if you don't understand the BIOS settings, you can directly press F9 to restore the default value, F10 is saved and restarted.

3 Boot and press F8 to enter safe mode and completely undo previous changes to the graphics card4 You can also choose from"The last time it was configured correctly"Enter the system and see if the boot is normal.

There are many reasons why the boot screen does not respond, the common reason is that the memory is broken or the memory slot is soldered, and then there is a problem with the power supply chip of the motherboard, and the BGA (north and south bridge, graphics card, network card, etc.) packaging chip is damaged by virtual soldering, which will cause the boot screen to not light up. It is recommended that you send it for repair and testing.

I'll help you in Beijing.

If you are not in Beijing, it is recommended that you find a reputable and skilled repairer to help you overhaul.

Exclusions:

Check whether the connection between the monitor and the graphics card is loose or damaged, check whether the graphics card fan rotates normally, check whether the graphics card is plugged in, check whether the power supply of the monitor is not plugged in firmly, check whether the connection between the hard disk and the motherboard is normal, check whether the connection between the hard disk and the power supply is normal, and restore it to normal if there is any abnormal phenomenon.

If the mouse and keyboard lights are not lit, it means that there are two problems, the first is that the above-mentioned graphics card, monitor and hard disk may be faulty, and the other is that the motherboard is faulty.

Check whether the light on the motherboard is on, if not, check whether the BIOS battery of the motherboard can store power (remove the BIOS battery in the shutdown state and use an electrometer to check whether the battery has power), turn on for 2 minutes to check the temperature of each chip of the motherboard (touch it slightly with your hands to feel the temperature change, if it feels hot, it indicates that there is a problem with the motherboard, just replace the motherboard).

Power point F12. Or f2 to see if there is a reflection If there is a reflection, it means that the problem is not big. Just get the system down from scratch.

If it doesn't reflect, you can press the shutdown button (not hold it) and see if you can turn it off at once. If only I could turn it off at once. It means that the machine has started normally, maybe it's just that the screen is not lit, and it's going to be dismantled, do you still want to listen?

I don't think I'll be able to make a decision before I get there.

Whether it's a problem with the graphics card, it depends on whether the notebook can display Lenovo's logo when it is turned on, if there is, it may be a problem with the graphics card driver, if not, it is a hardware failure, and it has nothing to do with software. If there is a Lenovo logo before entering the desktop、Win7The logo appears,Only after entering the desktop,The display screen is black,At this time, you should look at the number key control light and the size of the word light can accept keyboard control,Controllable,Yes, there is no display signal output to the display screen,Uncontrollable is the host crash。 You can change the system and see the results.

That means it's a hardware failure, not a software thing. Looking for after-sales service during the warranty period, the warranty will be done by yourself.

It redoes the system with a system disk

system, try rebuilding the system.

You have to take a closer look at whether the screen is not lit at all, or the screen glows a little bit and the screen is black and completely unlit:

1. Check whether the notebook shaft is loose, there may be a problem with the connection line 2, press the button to see if there is an alarm sound.

3. Pull out the battery and put it back on, and then turn it on.

Black screen: Find the boot disk to see if it can be driven, reinstall the system, and fix it.

Lenovo notebooks have a one-click recovery system, if the C disk has no important data, you can use the one-click recovery system to try.

Call Lenovo for free Sunshine**.

8008108888 Consult with an engineer.

If you can solve it, solve it yourself.

The money spent on the province is wasted.

It may be that the graphics card is loose, so go fix it in 2 minutes.