The laptop fails to start even after reapplying thermal paste.
The laptop fails to start even after reapplying thermal paste.
Hey there, I see you're facing a tricky issue with your Gigabyte G5 KF (2023). It’s been happening again recently while mixing tracks in VirtualDJ. At first, I thought it might be overheating, but that didn’t seem to be the case since gaming also caused the problem. After trying some adjustments and replacing the thermal paste, the laptop still wouldn’t power on. I’m hoping someone can help me figure out what’s going on. I’ve attached a photo of the board for reference.
GR-005-1 is labeled as 'non-conductive,' yet it may conduct electricity if silver or metal particles are present (up to 50%). Spills of any paste near the CPU or GPU die could create a short circuit, stopping the system from turning on. It’s best to clean the affected area with isopropyl alcohol and use a reliable non-conductive paste such as Arctic MX-6,…
This seems to be another issue altogether. If you replaced the thermal paste and the problem reappears within a few years, something else might be causing it. Generally, good thermal paste can last several years. I recommend inspecting and re-seating all ribbon cables—sometimes they appear properly installed but aren’t. The fan connectors seem to be in place. Try opening the laptop’s back cover, positioning the monitor-keypad at a 90° angle, pressing the power button, and checking if the fan starts when power is applied.
Thank you for the assistance. Unfortunately, even after attempting to clean the area, it didn’t resolve the issue. I then tried reinstalling the heat sink and securing it more firmly, but that also failed. This suggests short or contact problems are unlikely.
Ensure all connectors are securely placed. Then check for any signs of operation without a display: connect the charger, adjust the laptop to a 90° angle with screen and keyboard upright, press power and watch closely: a) Are fans running? b) Do indicator lights activate or change? c) Is there any faint noise like clicks or a whine? d) After a few minutes, does the CPU/GPU area feel slightly warm? If nothing appears, blinks, or sounds, it may indicate power delivery issues, EC firmware problems, or a short circuit. Next, try: 2. Reset the EC – disconnect charger and battery, hold power button for at least 60 seconds, then reconnect charger only (battery off), press power again. 3. This is how I handle a CPU/GPU with heatsink installed. Test with one RAM slot, use only charger, and disable all other peripherals: SSDs, Wi-Fi, display, keyboard, touchpad, USB devices. If fans or lights respond, the fault is likely in one of the removed parts (in my case, a keyboard).
If none of these methods work, consider using a thermal camera or microscope. Connect the adapter and check for the hotspot—this indicates where the short is located, or look for missing SMD components with a microscope. If that fails, electrochemical migration (ECM) might have occurred somewhere on the board. A dendrite could have formed between an anode and cathode, creating a rapid short that isn’t visible to a thermal camera; it may require a microscope with 50-200x magnification and patience to find. Alternatively, a cracked solder joint beneath a BGA chip could be the cause, preventing proper function even without a visible short. In such cases, reflow or service might offer limited relief. Good luck!