If your Lenovo IdeaPad Flex 5 suddenly stops charging, shows "Plugged in, not charging," charges intermittently, or doesn't respond to the charger at all, the problem is usually caused by loose connections, incorrect settings, battery issues, or faulty power drivers. Most charging problems can be fixed at home by checking a few key components. This guide explains effective solutions to help you restore normal charging.
Check Basic Hardware Connections
Before trying advanced fixes, confirm the essentials:
Ensure the Charger Is Properly Connected
Plug the power adapter firmly into the laptop
Ensure the wall outlet works (test with another device)
Avoid extension cords or surge protectors that may limit power
Perform a Power Reset
Shut down the laptop completely
Unplug the charger
Press and hold the power button for 15–20 seconds
Reconnect the charger and power on the laptop
If charging resumes, the issue was a power controller glitch.
Update Power Drivers
Power-related driver issues are one of the common reasons why the Lenovo IdeaPad Flex 5 may stop charging. If your ACPI battery controller, Microsoft AC Adapter driver, USB-C power controller, or chipset drivers are corrupted or outdated, the laptop may fail to detect the charger. Driver Talent X provides an easy automated way to identify and repair these driver problems.
Download and Install Driver Talent X
Click the Download button to get the installer, then run the setup file
Follow the on-screen instructions to complete the installation on your Lenovo IdeaPad Flex 5
Run a Full Scan
Open Driver Talent X and go to Drivers → Scan
The tool will analyze all charging-related components, including ACPI-Compliant Control Method Battery, Microsoft AC Adapter driver, chipset drivers, USB-C power delivery controllers, and other power management drivers that may affect charging
Update Drivers
Select all recommended driver updates or repairs
Driver Talent X will automatically download and install the correct driver versions required to restore normal charging functionality
Restart Your Laptop
After the updates finish installing, restart your Lenovo IdeaPad Flex 5
A fresh reboot ensures Windows properly loads the updated power drivers, often resolving charging detection issues immediately
Update BIOS & Firmware
Sometimes, charging issues on the Lenovo IdeaPad Flex 5 are caused by outdated BIOS firmware rather than hardware or driver faults. Updating the BIOS can fix power management bugs, improve battery detection, and resolve charging failures that occur after system updates or configuration changes.
Visit the official Lenovo Support website and search for your IdeaPad Flex 5 model
Go to the Drivers & Software section and locate the BIOS / UEFI category, then download the latest BIOS version available for your device
Run the downloaded BIOS installer and follow the on-screen instructions carefully. Make sure your laptop is connected to a stable power source during the update to avoid interruptions
Once the installation is finished, your system will restart automatically
A BIOS update often restores proper charging functionality, resolves battery recognition issues, and improves overall power stability on the Lenovo IdeaPad Flex 5
Keep the charger plugged in while updating BIOS.
Check Battery Health
If the battery is damaged or worn out, charging may stop entirely.
Press Win + R, type cmd, hit Enter
Type:
powercfg /batteryreport
Open the generated HTML report
Compare Design Capacity vs Full Charge Capacity
If the battery capacity is below 40–50%, replacement is recommended.
Conclusion
Charging issues on the Lenovo IdeaPad Flex 5 can stem from a variety of causes, including loose connections, faulty cables, outdated drivers, BIOS miscommunication, or a degraded battery. By systematically checking hardware connections, performing a power reset, updating power drivers with tools like Driver Talent X, refreshing BIOS and firmware, and monitoring battery health, most charging problems can be resolved at home. Following these steps ensures your laptop reliably detects the charger, charges efficiently, and maintains overall power stability.
