Lenovo T490
Battery not charge or will not fully charge on idea/Lenovo laptops
Check power supply cable and AC adapter. Confirm if power icon shows "Plugged in" at Windows taskbar.
- Power icon displays as
which indicates AC adapter is plugged in successfully. In this case, please go to next step.
- Power icon displays as
which indicates AC adapter may be faulty. Contact your service provider for help.
- Power icon displays as
which indicates battery is not detected.
- For systems with detachable battery, try to detach and reattach battery to machine, then connect AC adapter. This will reset communication between battery and controller chip.
- If your battery is not detachable, get the battery status screenshot in Energy Management or One Key Optimizer. Contact your service provider for help.
Troubleshooting battery issues – ThinkPad
Battery does not charge
- Problem: The battery cannot be fully charged by the power-off method in the standard charge time for your computer.Solution: The battery might be over-discharged. Do the following:
- Turn off the computer.
- Make sure that the over-discharged battery is in the computer.
- Connect the AC adapter to the computer and let it charge.
- If the optional Quick Charger is available, use it to charge the over-discharged battery.
- If the battery cannot be fully charged in 24 hours, use a new battery. - Problem: Your computer shuts down before the battery status indicator shows empty, -or- Your computer operates after the battery status indicator shows empty.Solution: Discharge and recharge the battery.
- Problem: The operating time for a fully charged battery is short.Solution: Discharge and recharge the battery. If your battery's operating time is still short, use a new battery. Note: Intensive applications may drain the battery faster than expected.
- Problem: The computer does not operate with a fully charged battery.Solution: The surge protector in the battery might be active. Turn off the computer for one minute to reset the protector; then turn on the computer again.
- Problem: The battery cannot be charged.Solution: The battery cannot be charged when it is too hot. If the battery feels hot, remove it from the computer and allow it to cool to room temperature. If the battery can't be removed, allow the system to cool to room temperature. After it cools, reinstall the battery (if it was removed) and recharge the battery. If it still cannot be charged, contact support.
- Problem: Battery not detected error. Contact support.
No power at all – ThinkPad
The system has no power.
- Verify the power status indicator. The power status indicator
is illuminated whenever the computer is on and is not in standby or hibernation mode.
- The power light should also be on if the PC has power.
- Check all power connections, and remove any power strips and surge protectors to connect the AC adapter directly to the AC power outlet.
- Inspect the AC adapter. Check for any physical damage to the adapter, cables, and plugs, and ensure the power cable is firmly attached to the adapter brick and the system.
- Verify the AC power source is working by attaching another device to the outlet.
- Remove the ThinkPad system from any docking stations or port replicators.
- Remove devices and then test for system power with minimal devices attached.
- Disconnect the AC adapter.
- Remove the battery (if the battery is removable, check the manual).
- Remove devices that can be removed, such as external keyboards or mice.
- Wait for 30 seconds before reconnecting the devices and power sources.
- Reattach the AC adapter to test the system with minimal devices attached first.
- Reattach each device that was removed in the previous steps, one at a time.
Fix Wi-Fi connection issues in Windows
Troubleshooting network problems in Windows
If you can’t get email, browse the web, or stream music, chances are you’re not connected to your network and can’t get onto the internet. To fix the problem, here are some things you can try.
Things to try first
Try these things first to help you fix or narrow down the connection problem.
- Make sure Wi‑Fi is turned on. Select the "No internet connection" icon
on the right side of the taskbar, and make sure Wi-Fi is turned on. If it isn't, select it to turn it on. Also, make sure Airplane mode is turned off.
- Afterwards, see if a Wi-Fi network you recognize and trust appears in the list of networks. If it does, select the Wi-Fi network, and they try to connect to it. If it says Connected underneath the network name, select Disconnect, wait a moment, and then select Connect again.
- Try connecting to a network on a different frequency band. Many consumer Wi-Fi routers broadcast at two different network frequency bands: 2.4 GHz and 5 GHz. These will appear as separate networks in the list of available Wi-Fi networks. If your list of available Wi-Fi networks includes both a 2.4 GHz network and a 5 GHz network, try connecting to the other network. To learn more about the differences between 2.4 GHz networks and 5 GHz networks, check out Wi-Fi problems and your home layout.
- Make sure the physical Wi‑Fi switch on your laptop is turned on. (An indicator light usually shows when it's on.)
- Run the Network troubleshooter. The Network troubleshooter can help diagnose and fix common connection problems.
To run the Network troubleshooter
- Select the Start button > Settings > Network & Internet > Status. Open network and internet settings.
- Under Change your network settings, select Network troubleshooter.
- Follow the steps in the troubleshooter, and see if that fixes the problem.
- Restart your modem and wireless router. This helps create a new connection to your internet service provider (ISP).
When you do this, everyone that is connected to your Wi-Fi network will be temporarily disconnected. The steps you take to restart your modem and router can vary, but here are the general steps. (Note: If you have a cable modem/Wi-Fi router combo device, you only need to follow the steps for the single device.)
- Unplug the power cable for the router from the power source.
- Unplug the power cable for the modem from the power source. Some modems have a backup battery. If you unplug the modem and lights stay on, remove the battery from the modem.
- Wait at least 30 seconds or so. If you had to remove the battery from the modem, put it back in.
- Plug the modem back into the power source. The lights on the modem will blink. Wait for them to stop blinking.
- Plug your router back into the power source. Wait a few minutes for the modem and router to fully power on. You can usually tell when they’re ready by looking at the status lights on the two devices.
- On your PC, try to connect again.
Troubleshooting wireless networking issues, Windows 7, 8, 8.1, & 10 – ThinkPad
For the purpose of this guide, the term Access Point is used for whatever wireless connectivity device is being used. This can be a wireless home gateway or an actual Access Point. Some of these steps may not apply to your computer. Test for network connectivity after performing each step.
Step 1: Verify that the network adapter is being seen by the operating system
Check Microsoft Windows Device Manager and look for an icon that appears as Network Adapters. See if the network card listed in the Mini-PCI information table is installed:
For Windows 8/8.1/10
Enter Device Manager in the search box, and tap or click Device Manager.
Swipe in from the right edge of the screen, and then tap Search.
Note: If the card has an exclamation mark over a yellow background or is not listed, then this is an indication that the card is experiencing a problem and may need to be re-installed.
Step 2: Verify that the radio is enabled and Airplane mode is off
The transmitter of the wireless card may be disabled without Device Manager showing any problems.
Note: Follow the provided instructions to enable the wireless card.
For Windows 10
- Search for and select Wi-Fi settings in the search box.
- Slide the Wi-Fi slider to on.
Or
- Right-click the network icon.
- Select Open Network & Internet settings.
- Select Wi-Fi.
- Slide the Wi-Fi slider to on.
Make sure Airplane mode is off.
- Right-click the network icon.
- Select Open Network & Internet settings.
- Make sure Airplane mode is Off.
Step 3: Verify that TCP/IP (or other appropriate protocol) is properly installed
- Open Control Panel and open Network Connections or Network and Sharing Center, then click Change adapter settings. The wireless card should be present as Wireless Network Connection.
- Right-click the appropriate Wireless Network Connection and select Properties. In the Properties window, make sure that the Internet Protocol (TCP/IP) or Internet Protocol Version (TCP/IPv4) is installed.
- If TCP/IP is not installed, click Install, click Protocol, and then click TCP/IP.
- Once installed, make sure that Obtain an IP address automatically, and Obtain DNS server address automatically are checked (if using DHCP). To verify this, highlight the TCP/IP protocol, and select Properties.
- Note: Only use a Static IP Address if the network/Service Provider requires one
Step 4: Verify the TCP/IP address
- Windows 10, 8: Search for command prompt or PowerShell. Right-click Command Prompt and select Run as administrator.
- Type the command, ipconfig. This will list the IP address for the local machine.
- If this returns a 169.x.x.x or 0.0.0.0 address, then type the following commands;
- ipconfig /release and then
- ipconfig /renew.
- You should then receive a TCP/IP address appropriate to the network, along with a Default Gateway address.
- Try to communicate with it by typing this command ping x.x.x.x where x.x.x.x is the IP address of the Default Gateway. (i.e. ping 192.168.1.1)
- If this does not give a reply (see the example in step 9) or a TCP/IP address was not received, go to the next step.
- If connecting wirelessly, but receiving an IP address, the wireless router/Access Point might need to be reset (unplug power for a minute, then plug back in), or may be defective. Please consult your wireless router/Access Point manufacturer for further assistance.