P750DM-G won't power on, even to bios

My 4.5 year old P750DM-G (specs in signature) abruptly powered down during use two nights ago. It won't power back on, even to the bios. Battery was at full charge, and it was plugged into power brick.

When the power button is pressed, the power Leds flash very briefly before returning to the prior state, almost like the laptop attempts to power on and immediately fails.

I've tried pulling the battery, holding down the power key for 60sec to drain residual power, plugging in (battery still removed). I've tried battery only. Tried leaving laptop unpowered and without battery over night.

I've also tried pulling my 2 RAM chips, attempting to powering on with one RAM set at a time individually. Tried pulling cmos battery.

So at this point, I suspect a dead motherboard. Given the laptop is 4.5 years old, maybe it reached about average lifespan. I'm just disappointed because I took really good care of it-- kept it clean, used a laptop cooler, never let it take physical shock damage.. Was really hoping it'd last longer. I think if the only option from here is $500 RMA/repair costs, I'd rather put that money toward a new laptop.


So the first half of this post is asking the question -- anyone have more experience with this issue or ideas of what to try?

Second question -- I was really considering the Razer Blade 15 Advanced as my new purchase, specifically this one here: https://www.razer.com/gaming-laptops/Razer-Blade-15/RZ09-03305E43-R3U1

However, if I go to Sager or LPC Digital, I can customize the NP8752N2 / PC50DN2 with the same CPU and GPU, same SSD size, plus even better RAM, for about $500 less. Are the 300hz screen and sleek design offered by Razer worth that $500, or are there other aspects I'm not considering? Also looks like the razer blade 15 has a bios that has possibly underclocked and undervolted, and locks the user out from making changes to either.

Thanks for your help.

 

If going for the Razer, you'll switch to a brand new 10th gen Intel-CPU, but on mobile limits. Might be even slower than your existing 6700K, which isn't TDP-limited.
Also the 2800 Super MaxQ is there for a reason. They are heavily tdp-restricted. The whole Laptop is designed for another purpose: Which is being as thin and portable as possible, while still being able to game, somehow. This leads to a much weaker cooling solution. And thus, to a VERY loud fan noise if trying to deliver full power.

I'm highlighting this cause your existing build breathes "Maximum spec only, gimme the best" like nothing else. You should have that in mind.

There are three extremes you can choose from:
- Lightweight and thin
- High computing power
- Low noise

Two are possible if you're willing to invest a bit of money. You can not choose all three. ;-)
I know this is nothing new, i just want to use it to point to the fact that the two laptops (DM <> Razer) are two of different worlds. So you ain't disappointed.

 

Appreciate the response, but I'm not trying to decide between the DM and the razer. The DM is dead unfortunately (that's the issue above in the first half), so assuming it's not worth it to fix it, what I'm asking in the second half is-- given the newer sager has the same hardware as razer minus the screen, are the screen and design of the razer worth that $500 difference?

I think the points you're making above apply to both options, not just the razer, right? Both are using 10th gen cpu on mobile limits, and the limited max-q gpu. The thermals are of course different, and maybe the Sager's increased size will trade off for being easier to cool, but both have their hardware limited as the mobile versions, right?

 

Hello @Jakamo5 ,

all H-marked Intel mobile processors are tdp-limited to 45 W.
Regarding the GPUs: You can check the difference on notebookcheck, but basically a MaxQ version is as fast as the lower ranked non maxQ Version. So you get a 2070 Super for the "price-tag" of a 2080 Super.
Also it should be noted that several MaxQ designs exist. With different TDP-settings. And manufactures often don't tell their chosen TDP.

I'm not saying this is always bad. These are the tradeoffs you have to make for getting a more mobile laptop. Just wanted to tell it to you, because you had a desktop CPU before (the DM).

There are desktop CPU laptops out there, if that is still your preference. From Intel and AMD. It's up to you to decide which route you want to go. I prefer the "desktop-replacement" laptop, others need mobile versions.
Heck, there's even a 12 or even 16 core AMD desktop core notebook available (with 2070 refresh, non-super, non-maxq). But this thing can not be reffered to as "mobile".

 

Basically looking at the laptop rather than the chips is a good idea.

 

Hi Meaker— since I see you’re with sager, I wanted to ask: is 4.5 years average lifespan for this model? Do you typically hear of issues around this point? I took such good care of the laptop, really kept it cool and clean and protected from drops or physical shock. Just bummed that it didn’t last longer.

also— any experience with this type of failure? Does it sound like it’s probably the motherboard?

Thank you.

 

Without doing a year down it's hard to say what has gone wrong. Plenty of them are still running there are always issues with some machines that will turn up over time.

 

Almost the exact same thing happened to my laptop, almost around the exact same time. I had been diligent about setting it to max fans for over four years since I had to have the motherboard and gpu replaced under warranty, but missed it this one time and the same described power behavior hit me. I've been trying to decide what to do about it, but have been in and out of surgeries that have kept me from getting it taken care of.

I don't know if there's an issue with the temperature sensing on the GPU or what, but running at full fans whenever gaming or drafting seemed to have worked ok.

Meaker, is there a way Sager could replace the 980m with a 1060 when I send it in for repairs this time?

 

Honestly, mine get's abused, it sits in a dusty, 180 year old house, thrown in my rucksack, transported half way around the world 6 or 7 times a year. Then at work, it get's left at the bottom of my cupboard for days at a time, pulled out, gamed and put back away. DMGs are solid. Every now and then I used to have to reseat my 980m to get it to start after a flight. MY 1070 has never had to do that. It's had that life for over 3 years and still troops on, letting me game anywhere in the world.

I have just spent some time weighing up options and bought a TM1-G, in hindsight, I should have gone for anX170SM-G barebones, moved everything over and carried on upgrading.