Internal Issues??
I have an EZbook S7 Max.. my dad got it for me on Amazon 😭
It has a (board ID JOYAR96E AN X133M) running an Intel Alder Lake N95, 16GB LPDDR4, 128GB eMMC plus 1TB M.2 SATA SSD, with a 38Wh battery (U516698PV-2S1P, 2025). It was in normal use while charging at about 60% battery, sitting on a pillow, when it suddenly powered off without warning the first time (not a low battery shutdown and not user initiated). Immediately after this event it would not power on at all: it had few led lights flickering then none, no fan spin, no screen, had sounds. Initial troubleshooting included testing multiple wall outlets, multiple chargers, and multiple cables (including both DC barrel charger and USB-C attempts). At one point, a random short USB-C cable briefly managed to power the system on.
After that, the laptop was kept running continuously for weeks without shutdown to avoid re-triggering the issue, and it remained stable in that powered-on state. However, once it was intentionally shut down again, it reverted to a completely dead state and remained unresponsive for days.
Further diagnostics I did myself… (I have no knowledge of anything tech I wing it LOL) this included full disassembly of the unit (with hinge clips requiring forced separation), inspection of all visible components, and internal power isolation tests. The internal battery was disconnected and the power button held to drain residual charge, and boot attempts were made with both battery-only and charger-only configurations. In all cases, the system remained completely unresponsive with zero signs of electrical activity (no fan, no LED, no warmth). I guessed that this ruled out software issues, operating system corruption, battery protection lockout, and simple charger failure. During inspection, no major burn marks or catastrophic board damage were immediately visible, although some whitening/discoloration was observed near the power/USB-C region of the chassis.
A key finding emerged during motherboard handling: pressing a specific area near the embedded controller chip (ENE KB9058QE) I took a video of for reference, causes the system to briefly come to life, with the fan spinning and an SSD activity light appearing for <30 seconds before shutting off again. This could possibly indicates the board is not fully dead but is failing during the power-on initialization sequence but based on symptom pattern and physical response to pressure, from what I researched everything kept saying that the most likely cause is a cold solder joint or cracked connection at/near the embedded controller (ENE KB9058QE), which is responsible for power button detection, EC initialization, fan control, and overall startup sequencing. This could also explain the core pattern where the system runs normally once already powered on, but fails completely after shutdown because it cannot reliably execute cold boot initialization. A second possibility may include cracked solder joints elsewhere in the power delivery path or issues with the PMIC/input circuitry, but EC-related failure appears most consistent in everywhere I looked up with relations to all observed behavior.
At this point I’ve tried all the standard troubleshooting: multiple chargers and cables tested, DC and USB-C input tested, battery disconnected resets, full power drain attempts done, and physical inspection. The system consistently shows no response unless physical pressure is applied to a specific motherboard region, where a partial boot sequence occurs. It could be a motherboard-level hardware fault rather than battery, charger, or software-related failure. Please let me know what you guys think! I don’t want to go in and pay for repair so anything I could learn and figure out myself. I’m willing to do anything but pay (because this doesn’t seem like a good enough computer to be worth it no offense to my father). I have videos of where exactly and what I’m doing to get the fan going, and lots of photos as well. I’m learning as well I have no idea of all the little things when it comes to IT or Technology but I’ve researched enough for this computer to get a small basis.