@lukesielhorst could be a power issue or could be processor issue with many other possibilities in between. First off, we will need to know your exact computer model. Nest you want to give this a try. Disconnect the power from the computer by unplugging the power cord from your computer. Disconnect all external devices from the computer. Remove the battery Now hold the power button depressed for about 30sec-1min. Reapply the AC power adapter and see if your computer does show any sign of life.
Next you want to check your power supply. Make sure it has the proper voltages. Check to make sure that connectors are not bend etc. Check the DC-in jack of your laptop. Make sure there is no corrosion, debris etc. that prevents it from working. Clean it of any debris etc, use a few puffs of air to clean it out. If none of this works, get an ammeter and see if your laptop draws any amperage from the charger. After that, you need to check and see if your motherboard even gets power. For that of course, you need to open it up. Post Some good pictures of what you see. That way we can see what you see. If at that level everything looks good, my next suspects would be the BIOS IC, the CPU or an overheating issue.
Now we will need to know the exact motherboard model that is installed. It will be printed on the motherboard itself, but that may be on the side that is not visible unless you remove the board. Then we need to determine if schematics are available. After that you would need to do a visible inspection of the board to see if there are any damaged components etc. We could possibly help, if you post some well focused pictures of your motherboard with your question. That way we can see what you see.
Voeg afbeeldingen toe aan een bestaande vraag
1 
972 
2,4k 
Have you already tried looking at the connection for the battery? Or the connection to the screen?
door Theo Grefalda