My old Lenovo laptop from around 2014 worked normally for several years, then gradually developed battery disconnects, touchpad and keyboard problems, and increasingly frequent Windows blue screens. The battery icon would repeatedly switch between charging and not charging, and moving the connector sometimes temporarily helped. Eventually the battery connection failed completely and the laptop became unusable.
My newer Asus TUF A15, running Windows 11, has started showing a very similar pattern after about three years. The display briefly turns off whenever the battery disconnects, and the battery icon switches between connected and disconnected. The touchpad sometimes freezes or fails to track movement, some keyboard keys are unreliable, and blue-screen errors have begun appearing. Restarting initially helped, but I am concerned the problem may eventually become permanent.
I use the laptop heavily every day and usually leave it running, using sleep mode instead of shutting it down. I install Windows updates regularly and have been careful with the USB ports, so I am unsure whether this is malware, software, heat, normal wear, a damaged charging circuit, or some other hardware issue. What is the most likely cause, and how can I diagnose or prevent the same problems on a future laptop?
4 Answers
A clean boot or a temporary Linux installation can help separate Windows or driver problems from hardware faults, but it will not repair a loose connector or failing battery. If the same disconnects and input failures occur outside Windows, treat that as strong evidence of hardware trouble. Back up important files now and avoid relying on the laptop until the battery and power system have been checked.
The blue screens need to be diagnosed from their actual stop codes and minidump files. Check the Windows Minidump folder and look at the crash details with a debugger or a crash-analysis utility. The dumps can distinguish faulty drivers from memory, storage, graphics, or power-related hardware. Without the exact stop codes, it is not possible to tell whether the crashes are related to the battery symptoms.
Before buying another laptop, have this one inspected while the problem is present. Run the manufacturer's hardware diagnostics, check battery health, test the memory and SSD, and inspect the battery and internal connectors. Also check temperatures and the charger. Leaving a laptop on or in sleep mode is not normally enough to cause this pattern, although heat, dust, battery aging, and frequent charging cycles can contribute to hardware wear.
The battery connection, touchpad, keyboard, and display behavior all point more toward a physical hardware or power problem than a virus. A loose or damaged battery connector, charging circuit, swollen battery, liquid or debris, or damage to the motherboard can cause several of these symptoms at once. Avoid repeatedly repositioning a connector, and stop using the machine if the battery is swollen, hot, or lifting the case.
Debris or oxidation around a connector can also cause intermittent input problems, but keys and the touchpad failing together could indicate a broader internal connection or motherboard issue rather than ordinary dust alone.
On the older machine I mostly saw the battery icon change, while on the Asus the screen briefly goes black when the battery disconnects. Both are running Windows, but the newer system is fully updated.