When you plug in your máy vi tính, you usually find yourself greeted with a cheerful chirp from your PC, a glowing LED indicator light, and a display that perks up and beams a bit more brightly.At least, that"s what it"s supposed khổng lồ do.

Bạn đang xem:

Sometimes, though, you connect the AC adapter—usually because the battery is nearly drained—and you get nothing. No glowing lights, no brightened display, and no "battery charging" ibé in the corner. What could be wrong?

There are numerous ways to lớn take care of your battery, but between the wall outlet và your computer there are several steps & parts that can all fail. Some are easy khổng lồ fix yourself with a software tweak or a new battery, but other problems may require a visit to lớn a repair siêu thị, or even a full-blown system replacement.

Knowing which is which can save you hours of frustration and hundreds of dollars in repairs. By taking an inside-out approach, you can quickly narrow down where the problem originates & find the most economical solution.

Get ready, boys and girls, it"s time khổng lồ go troubleshooting.

Are You Plugged In?

It sounds silly, but you need lớn make sure the máy tính xách tay is actually plugged in. No software tweak or hardware repair can make a disconnected laptop magically power on. So before you bởi anything else, ensure that the AC outlet and laptop plugs are firmly seated.

Cheông chồng the AC adapter briông chồng and verify that any removable cords are fully inserted. Next, make sure the battery is properly seated in its compartment, and that there is nothing wrong with either the battery or máy tính tương tác points.


Finally, find out whether or not the problem even has anything to lớn bởi with the máy vi tính at all. Try plugging the power cord into a different outlet khổng lồ see if you"ve sầu got a short or a blown fuse. If it"s plugged into lớn a surge protector or power strip, take it out and plug it directly into the wall.

At this point, if it still doesn’t work, we"ve sầu determined that it"s not just user error causing the problem. There is a real issue with powering the laptop; now it"s simply a matter of figuring out where the problem may be. That begins with eliminating where it isn"t. We"ll start with the most comtháng and easy-to-address issues.

Lose the Battery

First, check the integrity of the battery. If your máy tính xách tay comes with a removable battery, take it out, và hold the power button down for about 15 seconds lớn drain any residual power from the device. Then, with the battery still removed, plug in the power cable và turn the laptop on.

If the máy tính powers on properly, that means the power adapter is working properly and the problem is likely a bum battery. Though you can always re-install the battery và try again—maybe the battery was just poorly seated.

If your máy tính doesn"t have a visible battery compartment on the bottom, it may be built inlớn the laptop (lượt thích most Macs are), & you"ll either have to lớn open it up yourself or take it to lớn a repair speciacác mục khổng lồ test the battery.

Make Sure You"re Using the Right USB-C Port

USB-C is a popular cross-platform standard for connecting peripherals, transferring data, & charging your battery. The new standard allows for thinner devices, but might also cause some confusion. Some manufacturers have sầu opted khổng lồ make certain USB-C ports data-only, so they won"t charge your device.


For example, some devices, like the Huawei MateBook X Pro, have two USB-C ports: one that can be used for charging or data transfer, & one that is only designated for data transfer. If you run inkhổng lồ a non-charging issue, make sure you are connected to the correct USB-C port—you may even be able khổng lồ see a little icon on the side that indicates which port is meant for charging.

Is Your Charger Powerful Enough?

Similarly, just because a power adapter fits inlớn your laptop"s charging port doesn’t mean it’s powerful enough lớn charge your máy vi tính. This goes for any type of charger, but it’s an especially common problem with laptops that charge over USB-C—you can technically plug in any USB-PD charger, but some may have sầu too low a wattage lớn properly charge.


Chechồng the wattage of the charger that came with your laptop—if it came with a 45W charger, you’ll probably want to stick with a 45W charger (or higher) khổng lồ power it, and so on. A lower-wattage charger mightkeep the battery from draining while you use it, but it won"t be enough to charge it any higher. If it does manage khổng lồ recharge your computer, it will bởi so much slower than usual.If you’re going lớn use a third-buổi tiệc nhỏ USB-C charger, try khổng lồ use one that’s been certified by the USB-IF.

For laptops that don"t charge over USB-C,I generally recommover sticking with the manufacturer’s official, original charger. Cheap, no-brand chargers can be low unique or even dangerous, so if you have sầu one of those, try charging with the laptop’s official charger instead.

Breaks, Burnout, and Shorts

Feel along the length of the power cord, bending & flexing as you go, to check for any kinks or breaks. Check the ends for any broken connections, such as plugs pulling loose or spots that may have sầu gotten chewed by a pet or caught in a vacuum cleaner.


Inspect the AC briông chồng. Is it discolored? Are any parts warped or expanded? Give it a sniff—if it smells lượt thích burnt plastic, that"s likely where the trouble lies. You may need to lớn replace the power connector. Liên hệ the manufacturer & see if they"ll skết thúc you a new one under warranty. (Or, barring that, if they"ll sell you one directly.)

Chechồng the Connector

When you plug in the laptop"s power connector, the connection should be fairly solid. If there"s dust or other buildup inside the jaông xã, it may not be able to make a clean connection. Try cleaning out the jack with a toothpichồng, và plugging in again.


In more extreme cases, you may find the jaông chồng is wobbly or loose, or gives when it should stay firm. This could mean the power jaông xã has broken inside the chassis, và you"ll need khổng lồ take your computer lớn a repair cửa hàng (or, if you"re comfortable opening it up, doing some at-trang chính repairs).

Xem thêm: a razer core

Beat the Heat

Batteries are susceptible to lớn heat, so if your máy vi tính is overheating, that could cause a problem. As the temperature rises, the battery sensor may misfire, telling the system that the battery is either fully charged or missing completely, causing the charging problems. You may even find that your system shuts down to prsự kiện overheating a battery và causing a fire.

These problems become far more likely when dealing with older laptops, which have lower-chất lượng cooling than more modern devices—or if you tkết thúc lớn use the máy tính on the couch or in bed, which can bloông xã the cooling vents. Turn the system off, give it some time to lớn cool down, & take a moment to lớn make sure the air vents are free of dust & unobstructed by blankets.

Cheông chồng Your Settings

For Windows Laptops

In Windows 10, open the Start thực đơn & tìm kiếm for "nguồn & Sleep Settings," then cliông xã the Additional nguồn Settings. (On older versions of Windows, open the Control Panel & search for "Power nguồn Options.") Clichồng Change Plan Settings and visually kiểm tra that all are properly set.


Be on the lookout for incorrect settings for the battery, display, and sleep options. For example, your battery settings may cause trouble if you phối the computer khổng lồ shut down when the battery level drops too low or phối the low battery cấp độ at too high a percentage.

You can also assign actions like sleep và shut down when your lid is closed or the power button is pressed. If these settings have sầu been changed, it"s easy khổng lồ suspect a power malfunction even though there"s no physical problem with the battery or charging cable. The easiest way lớn make sure that your settings aren"t causing problems is to restore the power profile to lớn default settings.

For Mac Laptops

In System Preferences, select the Energy Saver pane và Đánh Giá your preferences. Mac settings are adjusted with a slider, letting you select the amount of time the computer can sit idle until it goes khổng lồ sleep. If the interval is too short, you might suspect battery issues when settings are the true culprit.


Don"t forget lớn kiểm tra these settings for both battery power and wall power. You may want lớn revert back to lớn the mặc định settings to lớn see if a change in settings is causing the problem.

Update Your Drivers

For Windows Laptops

mở cửa the Start menu và tìm kiếm for "Device Manager." Under Batteries, you should see a few items: usually one for the charger & one listed as Microsoft ACPI Compliant Control Method Battery, though there may be others. Right-click each nhà cửa and choose Update Driver.


Once the drivers are all up to date, reboot the máy tính xách tay & plug it in again. If this doesn"t resolve sầu the problem, you may want lớn tải về the lathử nghiệm drivers from the manufacturer"s website. You can also try uninstalling Microsoft ACPI Compliant Control Method Battery completely and rebooting, which should prompt Windows lớn reinstall the driver from scratch.

For Mac Laptops

On a Mac, you"ll need to lớn try resetting the System Management Controller (SMC). For laptops with removable batteries, this is as simple as shutting down power, removing the battery, disconnecting power, and pressing the power button for five sầu seconds. Reinsert the battery, connect power, và fire up the máy tính.

For newer Macs with batteries sealed into lớn the chassis, shut down the computer, but leave the power adapter connected. With the power off, press and hold the power button while pressing the Shift-Control-Option keys on the left-hand side of the keyboard. Release the keys và power button simultaneously, then attempt to power on the máy tính.

gọi In Outside Assistance

If you"re still having problems, this is probably a good time to lớn liên hệ tech tư vấn. Your particular make và Mã Sản Phẩm of máy tính will likely have sầu its own quality issues, and a seasoned tech tư vấn operator will have sầu seen all of them.

The person you talk to will likely walk you through many of the steps outlined above sầu, but will also be aware of software & hardware issues specific to your configuration, such as what bits of hardware commonly fail.

Swap Out the Cord và Battery

If the above software tricks don"t work, và you aren"t able lớn fix the problem with the parts you have on h&, you may have to lớn buy a new battery or power adapter (which one will depkết thúc on what you were able lớn narrow down with the above sầu troubleshooting steps).


You may be able to lớn find a replacement power cable or battery on Amazon, but again, make sure it"s a legitimate part from the original manufacturer. Using third-các buổi tiệc nhỏ replacements for the real thing is never recommended, especially when it comes lớn power.

Your best bet is lớn tương tác the manufacturer directly and order a replacement part, if you can. It will be a little more expensive, but you"ll know you"re getting a unique component.

Problems Inside

When all of your options are exhausted—you"ve tried other power cables and batteries, checked and rechecked your settings, fixed any potential software problems—the problem is likely found inside the machine.

Several internal parts can cause problems when they malfunction or fail. Comtháng culprits include a faulty motherboard, damaged charging circuits, và malfunctioning battery sensors.

Xem thêm: Adobe Photoshop Fix - Adobe® Photoshop® Touch

Like a sichồng person consulting a doctor, internal problems require a specialist. Liên hệ your manufacturer about what repair options are covered under your warranty, or call up a local computer repair siêu thị.

Chuyên mục: Điện máy