My old Lenovo laptop from around 2014 and my current Asus TUF A15 have developed surprisingly similar problems after roughly a year or more of use. The battery begins disconnecting and reconnecting, sometimes depending on the position of the connector. The touchpad becomes unreliable or freezes, some keyboard keys stop working, and Windows eventually starts showing blue-screen errors. On the Lenovo, the battery icon repeatedly changed states; on the Asus, the screen briefly turns off whenever the battery disconnects, and the battery icon also changes. The older laptop eventually became unusable, while the Asus still works. Both use Windows, although the Asus runs Windows 11 and receives updates automatically. I use the laptop every day for long periods and usually leave it running or put it to sleep instead of shutting it down. Could this be malware, heat, dust, battery wear, or a hardware design problem? How can I diagnose it and prevent it from happening to another laptop?
4 Answers
The pattern sounds much more like a physical hardware or power problem than a virus. A loose or damaged battery connector, a failing battery, chassis flex, corrosion, or even a swollen battery can cause brief power interruptions. Those interruptions can also lead to file-system damage and blue screens. Stop using the machine if the battery is swollen, the case is lifting, or the touchpad is being pushed upward, and have the battery and connector inspected rather than repeatedly repositioning the plug.
Using a laptop all day and leaving it asleep is not, by itself, a reason for the keyboard and battery connector to fail. It can contribute to heat and battery wear, especially if ventilation is blocked or the laptop is used on soft surfaces, but two different machines are more likely to share similar usage conditions than a hidden software infection. Keep vents clear, avoid excessive heat, use a proper charger, and occasionally shut down or restart for maintenance. A Linux live USB can also help: if the touchpad, keyboard, or battery behavior continues outside Windows, that strongly points to hardware rather than Windows drivers.
The blue screens need their own diagnosis. If Windows still starts, copy the files from C:WindowsMinidump and inspect them with a crash-dump tool, or have a technician analyze them. The stop code and the named driver or module are much more useful than simply saying “blue screen.” Also test the RAM and storage, check the battery and charger, install the laptop manufacturer’s drivers and firmware, and run system-file and disk checks. A USB device being plugged and unplugged normally does not permanently damage a laptop or cause this exact chain of failures.
The touchpad, keyboard, and battery connector are often located in the same palm-rest area, so dust, liquid residue, a loose ribbon cable, board damage, or a swollen battery could affect several of them together. Carefully inspect the case for bulging and have the internal connectors reseated by a technician. Do not keep bending or shifting the connector, since that can worsen a damaged socket or motherboard trace.
Dust can definitely cause an unreliable touchpad or connector, but it would not normally explain every blue screen by itself. It is worth cleaning and checking the hardware, while treating the crashes as a separate issue until the dump files identify their cause.
That makes sense. On the Asus, the battery disconnect is visible through both the icon and the brief screen interruption, so I’ll have the battery and connector checked instead of assuming it is a Windows problem.