New Prebuilt Build No Signal (not even BIOS)

[TechManMax]

From Dr Memory on eBay (Trusted UK seller and they manufacture their own parts under the Xum brand and have very positive reviews) so currently waiting to hear back from them (won’t be before Monday unfortunately).

But…I’ve tried everything. The computer physically boots and the case fans and the CPU cooler fans (Thermalright Peerless Assassin 120 SE) work fine. I’ve tried swapping out the preinstalled Xum Ram (2x 16GB 3200 DDR4 CL22) for the Corsair CL16 3200 2x 16GB that I bought separately on Amazon and the no signal issue remains. I’ve tried unplugging and reseating the GPU (Palit Dual RTX 4070 Super) and still no signal. It’s of note that when I start the computer I can see all the case fans working, the CPU cooler fans (for the i7 13700KF so no integrated graphics to test) working, but the GPU fans are NOT spinning at all (though according to google this isn’t unusual on modern GPUs because they only start spinning past a certain temperature apparently?)

I have no idea what’s wrong. I get the single “Beep” sound when I turn it on, but no signal. No BIOS. Nothing. Apparently sometimes people get beep errors indicating different issues but I’m not getting any of those just the usual singular “Beep” when I press the power button. I’ve tried all 3 display ports on the GPU, as well as the HDMI port. I’ve tried on both LG C2 TV (HDMI) as well as 1080p monitor (DisplayPort AND HDMI). No signal. Both displays work fine with other devices.

Motherboard is ASRock B760M-HDV/M.2 D4

What is wrong?

[TechManMax]

Publicado originalmente por _I_:

Publicado originalmente por TechManMax:

Did you see my reply on the previous page where I showed the manufacturers response? The cooler in use here is a Thermalright Peerless Assassin 120 SE and the case also has 6 built in fans (1 rear, 2 top, 3 front). The manufacturers response to what people have been saying wasn’t to deny it but rather they said this:

“Hi,

Yes, these people would be right if the CPU cooler was an issue.

I can send you your test results after we test your new PC you can see your speed clock and what power it reaches if you are not sure about the board.”

I’m currently awaiting these results as they are building the replacement PC today.

tower cooler cools the cpu better, but not the boards vrm areas
stock cooler blows air down on the board cooling its mosfets that power the cpu

the board is overheating and throttling the cpu to save itself

the cpu cannot get hot because the board cannot deliver enough power to make it hot

I’m awaiting their test results (idk what tests they will carry out but I’m hoping Cinebench is in there somewhere). Ultimately the actual tests/benchmarks should determine if their confidence in the cooling solution is justified or not. I absolutely do not want a bottleneck that affects gaming performance for my uses (as described in one of my earlier comments). Stuttering was one thing that annoyed me with laptops. i9 13900H with RTX 4070 mobile GPU nothing I changed would prevent annoying microstutters in games.

[kingjames488]

9 times out of 10 it's not something complicated tho.

[_I_]

also try updating bios
it may have fixes for the problems

https://www.asrock.com/mb/Intel/B760M-HDVM.2%20D4/index.asp#BIOS

[kingjames488]

Publicado originalmente por _I_:

also try updating bios
it may have fixes for the problems

https://www.asrock.com/mb/Intel/B760M-HDVM.2%20D4/index.asp#BIOS

why would a BIO be too out-dated to have a video signal? that doesn't make sense.

[Ralf]

Publicado originalmente por TechManMax:

From Dr Memory on eBay (Trusted UK seller and they manufacture their own parts under the Xum brand and have very positive reviews)

Publicado originalmente por TechManMax:

To clarify the PSU in this build is 850W.

So you say they dont just slap the XUM 850W 80+ Bronze sticker on a low quality psu and call it a day, but actually have the means to manufacture it?

[TechManMax]

Publicado originalmente por Ralf:

Publicado originalmente por TechManMax:

From Dr Memory on eBay (Trusted UK seller and they manufacture their own parts under the Xum brand and have very positive reviews)

Publicado originalmente por TechManMax:

To clarify the PSU in this build is 850W.

So you say they dont just slap the XUM 850W 80+ Bronze sticker on a low quality psu and call it a day, but actually have the means to manufacture it?

They do manufacture their own parts (as a company), including RAM, but the power supply was actually made by GameMax (at least the one that I sent back was). Also other parts like the SSD, GPU, CPU, MB, etc were made by ADATA, Palit, Intel, ASRock, etc. They contacted me earlier RE the replacement build to say they are building it and will keep me informed on the test progress but I haven’t heard anything more yet and it’s past close of business now so hopefully will hear something tomorrow. They also trade as a limited company in the UK under the name “Xum Enterprises Limited”. The PC case was also manufactured by them. It’s a “Xum Legend” case.

[kingjames488]

I don't think this is about their questionable part selection tho...

the MOBO should post and output signals without anything in it... if it's not doing that it's probably bad.

edit: unless it's one of those new-fangled ones without onboard GFX and you don't have a CPU with GFX subprocessors... then you're kinda SOL for troubleshooting.

[TechManMax]

Publicado originalmente por Mod_Abuse_victim#488:

I don't think this is about their questionable part selection tho...

the MOBO should post and output signals without anything in it... if it's not doing that it's probably bad.

My guess was the GPU was just dead on arrival (or damaged in transit)…although I’d be surprised given how much bubble wrap was in the packaging. But the GPU was just lifeless. All the case fans, the CPU cooler fans, etc were all living life and the GPU was just dead. The fans didn’t spin at all, no signal, no lights, no sound. Just lifeless. I’m hoping they will confirm exactly what the problem was just because I’m curious. Right now though they are building me a replacement PC though.

[Win2000Fan]

My humble opinion here but if this were me I would’ve had enough of this and demanded my money back. By now I would have stopped with the research rest my poor brain and move on. Look at all the time you are putting into this and yes our time is money as well. Demand a refund and move onto another company. Yes it might be more out of pocket but it is time to move on.

[TechManMax]

Publicado originalmente por 10Transistor:

My humble opinion here but if this were me I would’ve had enough of this and demanded my money back. By now I would have stopped with the research rest my poor brain and move on. Look at all the time you are putting into this and yes our time is money as well. Demand a refund and move onto another company. Yes it might be more out of pocket but it is time to move on.

That would be my reaction, and will be, if they don’t rectify the situation. However they responded quickly, are proactively working on rectifying the situation and I will wait to see how the replacement build works out. I’d rather wait an extra 24 hours for them to fully test the build than receive another broken computer. But what I’ve asked of them isn’t just to test that the build is working but also to backup their claims that the CPU can work with the cooling solution given the limitations of the motherboard VRM (they seem confident that it can with their cooling solution). I’m hoping to receive the results of their testing tomorrow.

RE the money it’s highly unlikely I’ll find a similar/better build for the same price. It was £1383.09 (parts for my own build were quoted at £1500-£1600 and then theirs the fact that if I were to have built it myself and something wasn’t working, like in this build, it would be my responsibility to figure out what was wrong which given the money spent would be an extra stress I’d rather live without. Here it’s their responsibility under UK trade law as well as their warranty). But yea, my patience won’t be infinite lol.

[TechManMax]

Right so the manufacturer got back to me.

https://imgur.com/a/ZBWfED0

Not sure if that’s looking good or bad, or what load it was under. Not really a benchmark though…

I did ask them to run a Cinebench.

[TechManMax]

Oop. Just had another (very surprising) update…

“Good Afternoon,

We have decided to upgrade your motherboard to Asrock H670 Steel Legend.

Before the upgrade, we were getting the following scores with Cinebench R23

Multi Core: 18542 PTS
Single Core: 2056 PTS

After upgrade

Multi Core: 25992 PTS
Single Core: 2078 PTS”

Thank you for all your advice guys if it wasn’t for you I would have been completely oblivious to the VRM issue and wouldn’t have challenged the manufacturer. Because of you they’ve given me a FREE board upgrade!

[_I_]

glad its sorted and working as intended

cheap board is cheap, and cannot run higher demanding cpus at their rated spec
the newer board is much better design, info page says 9 phases, but pic shows 10 chokes
probably 8+1+1 with cooling, it can deliver~ 200w to the cpu cores, more than enough to hold it at its max turbo if the cpu itself has good cooling, which your tower cooler can easily do

[TechManMax]

Publicado originalmente por _I_:

glad its sorted and working as intended

cheap board is cheap, and cannot run higher demanding cpus at their rated spec
the newer board is much better design, info page says 9 phases, but pic shows 10 chokes
probably 8+1+1 with cooling, it can deliver~ 200w to the cpu cores, more than enough to hold it at its max turbo if the cpu itself has good cooling, which your tower cooler can easily do

Yes I’m super excited to receive and test the new build. The change of motherboard has delayed shipping by a further 24 hours (I think they repossessed the earlier shipment) but honestly it’s worth the extra wait. They’ve also confirmed that due to the issues I’ve raised they will cease using the earlier board in their future builds so we’ve helped future customers as well. And all at no extra cost to me.

[_I_]

that b board would be fine with low end cpus, pentium g or i3
but i5k or i7k should be in a z board