Clyde

Don't give up like this. 1. Strip it down and connect to the mainboard (with cooling) the CPU, GPU, one RAM stick and external screen plus power button. Power it up and see if it's POSTing. 2. If yes, power it down and connect the rest of the components one by one to see which one causes a problem. 3. If not, take everything off (CPU, GPU and RAM and check the mainboard for obvious damage (burns, all connector/socket pins), then measure resistance between the motherboard ground and all coils (except 19.5V and 3.3V rails, which are working). 4. If everything looks ok (no shorts), go to 1, power the board up, and check for the voltage presence on each coil (5V, 3.3V, 1.5V, 1V...). You may need to power the board down and up a few times at each measurement. If any coil has no voltage at all, you may have a more complicated issue like a faulty mosfet driver or missing driving signal (faulty resistor). You are lucky it's Clevo, so you'll be able to find everything you need in the schematics in the Service Manual. But you'll need advanced knowledge about fault-finding. Just give it a try. Edit: Check for a faulty fan. That might be a no POST problem too.

From P150HM to P570WM, I never had a single issue with EC/BIOS or the motherboard (I always used Prema BIOSs). And trust me, I did everything with Clevo laptops to break them down. But, after P570WM (and Windows 7), many things, I guess, changed. The P870xx looks like the last solid piece of equipment from Clevo, so I hope it's just a corrupted EC or an obvious hardware fault that you can easily fix. Anyway, by trying to fix it, you'll learn many things. 🙂

I still have a working one, but it is not for sale. My daughter took her first steps on it, which is sentimental to me. 😄 Back in time, I ordered whole Clevo laptops in parts from Clevo Germany

Hi Scourge, No POST means there is a hardware issue. If you have already replaced all the components without success, it is probably a problem with the motherboard. It might be a missing voltage rail for the CPU, GPU or RAM caused by a faulty cap or MOSFET. If you have an EC problem, nothing will happen after you power it up, which is not the case. If you have a little knowledge of fault-finding, take the motherboard out and check for a short on each power rail. Take the resistance between ground (copper under the screws) and each coile. If any reading is near 0 ohm, that means the above.

Hi everyone. I recently replaced an FHD panel with a 4K AUO B156ZAN04.1 and the 30 with a 40-pin (02KWM2) cable. When booted into Windows, the picture looks like a faulty GPU or cable. But in the BIOS, the image was correct. Since I disabled Hybrid Graphics in BIOS, everything works fine. Any idea what's wrong with it?

Hi folks. I'm new to this forum. Many years ago, I was pretty active on the Techinferno forum, mainly about Clevo laptops. I'm getting older and lasy, so I recently moved to the Dell Precision 7560 platform. I like it overall but faced a few well-known issues I would like to discuss with someone more knowledgeable than myself.