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i5-7600K no dual channel, RMA cpu?

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i5-7600K no dual channel, RMA cpu?

I have this cpu working with a GA-B250M-D3H and 2x8GB of DDR4 2400 Cosair ram, this morning when I turn on the computer, I hear 5 peeps and it won't boot. I tested it with just one ram on Channel A and it works but if I put in just one ram on channel B or 1 ram on A and 1 on B, it will not boot (5 Peeps). I tested the cpu on a MSI B250M Mortar motherboard and same thing. Tested both ram with a i3-8100 with Asrock Z370 pro 4 and no problem with the ram. I suspect there is something wrong with the cpu since the problem happened to both the Gigabyte and MSI board.

Any ideas before I request RMA, the cpu warranty is till April 2020, do I need to send the original box too if rma is approved. TIA
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apvm wrote: I have this cpu working with a GA-B250M-D3H and 2x8GB of DDR4 2400 Cosair ram, this morning when I turn on the computer, I hear 5 peeps and it won't boot. I tested it with just one ram on Channel A and it works but if I put in just one ram on channel B or 1 ram on A and 1 on B, it will not boot (5 Peeps). I tested the cpu on a MSI B250M Mortar motherboard and same thing. Tested both ram with a i3-8100 with Asrock Z370 pro 4 and no problem with the ram. I suspect there is something wrong with the cpu since the problem happened to both the Gigabyte and MSI board.

Any ideas before I request RMA, the cpu warranty is till April 2020, do I need to send the original box too if rma is approved. TIA
How do you know it's not the B250 mobo? I think it's rare that a cpu has a problem in which a system won't run. Channel A works but Channel B doesn't work. That to me is a bit suspicious.

Oh, the MSI board did the same thing? It boots up fine with just one RAM stick used?
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Were you using either mobo before with a different cpu? You might check BIOS settings, is XMP enabled and some people talk about the DRAM voltage with having trouble with one RAM stick. But, maybe you have done all that previously?
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teleguitar wrote: Were you using either mobo before with a different cpu? You might check BIOS settings, is XMP enabled and some people talk about the DRAM voltage with having trouble with one RAM stick. But, maybe you have done all that previously?
One ram boots up fine, both motherboard working fine. the cpu and gigabyte working for a few months before yesterday, so don't think is the ram stick or voltage, since I tested the ram on another machine and they work fine. By the way if I install both ram on channel A, it boots as well but bios will warn that ram in wrong configuration for dual channel. by the way according to gigabyte 5 peeps is cpu related.
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RMA with Intel is easy. I did most of the process online.Turnaround time was amazing too..

I had to pay for the shipping 1 way. See if you can get them to do it for free
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I don't know if this helps.... maybe read/skim through????

http://www.tomshardware.com/answers/id- ... beeps.html

Which 'type' (fast speed) of boot are you using?

Check for bent pins? What cpu were you using before for either of those motherboards? Will either mobo still work now with the processors you were using before?
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I didn't think it was the processor but perhaps....if the previous owner overclocked it too much (maybe overvolted?)? I would try different things before concluding it is the cpu, though. Just to make sure.
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teleguitar wrote: I didn't think it was the processor but perhaps....if the previous owner overclocked it too much (maybe overvolted?)? I would try different things before concluding it is the cpu, though. Just to make sure.
I was kind of thinking the same thing about this. That's why I do not like to dabble in used CPU's especially K's and graphics cards. So many 'liars' out there.
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when was the last time you've heard overvolting a cpu to lose some functionality, but not completely burn out? It's unlikely to be this.
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I have had this happen before and it was because of a cheap motherboard. I learned my lesson and I have only ever used quality motherboards since. OP your motherboard looks pretty basic. My guess is it is the problem, not the CPU.

Also are you sure you're using the right slots? You read the manual just to be sure?

If you do have to RMA through Intel it's a really easy process. They are great about it and the shipping is fast. It took me 2-3 days last time IIRC.
I am a Zoomer customer.
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SickBeast wrote: I have had this happen before and it was because of a cheap motherboard. I learned my lesson and I have only ever used quality motherboards since. OP your motherboard looks pretty basic. My guess is it is the problem, not the CPU.

Also are you sure you're using the right slots? You read the manual just to be sure?

If you do have to RMA through Intel it's a really easy process. They are great about it and the shipping is fast. It took me 2-3 days last time IIRC.
The cpu was working for like 2 months with the motherboard without any problems. Now I have another problem, I tried a 6600k with the gigabye and MSI and have the same problem. Tried both 7600k and 6600k with a friend's H110M motherboard, same problem and his cpu a G4560 does not. I am not going to find a solution anymore, going to rma both cpu (both under warranty till early 2020) and both MSI and Gigabyte motherboard, Going to sell everything when they come back.

This is my 1st cpu problem after so many years, my 1st cpu was an AMD 386DX-40
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apvm wrote: The cpu was working for like 2 months with the motherboard without any problems. Now I have another problem, I tried a 6600k with the gigabye and MSI and have the same problem. Tried both 7600k and 6600k with a friend's H110M motherboard, same problem and his cpu a G4560 does not. I am not going to find a solution anymore, going to rma both cpu (both under warranty till early 2020) and both MSI and Gigabyte motherboard, Going to sell everything when they come back.

This is my 1st cpu problem after so many years, my 1st cpu was an AMD 386DX-40
Did you ever consider that the BIOS for these motherboards are not updated to support these processors? The H110 mobo might need a BIOS update? It just came to me so maybe if I think about it, maybe this is not a good theory but I agree with the poster who says the motherboard is probably the problem and not the cpu. Another poster said probably not the cpu, too and I originally was inclined to think the cpu might not be the culprit. However, I didn't want to be *too* certain and I suppose a cpu can be 'the problem' in some scenarios but I would think you would really have to overvolt it for a long time and at exceptionally high voltages because lots of people overclock their processors and they 'generally don't go bad.'

Anyway, if the theory is no good, it's still a strange coincidence to have the same problem with two different processors.
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You have to consider that Microsoft applied the flawed micropatches for the cpus in the last few weeks from intel for the spectre meltdown flaws. That might have borked something.
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When I was setting up a new i7 8700K, only the B channel was working correctly. A channel gave me trouble.
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Submitted the request on Sunday, they sent me an email for more details yesterday but it is in my junk mail box, replied with all requested details just now, hopefully, will hear from them soon.
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justmehereajax wrote: When I was setting up a new i7 8700K, only the B channel was working correctly. A channel gave me trouble.
I will just send it back for them to test it if you can afford the downtime.
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Wow that's a weird problem but yeah sounds like an issue with the IMC in the CPU--pretty rare for that to happen but yeah if you can RMA it, get a new CPU from Intel :)
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ES_Revenge wrote: Wow that's a weird problem but yeah sounds like an issue with the IMC in the CPU--pretty rare for that to happen but yeah if you can RMA it, get a new CPU from Intel :)
Last weekend was very bad for me, replaced the 6600K with a 7600K that I bought last week and sold the 6600K but when the buyer tested it, the 6600K has this problem, so took it back to test it myself to make sure and the buyer was right, put back the 7600K in the box and the 7600K has the same problem. Tested them with my other motherboard, same problem. Placed back another 7600K (I have two) and problem is gone. Now I have to RMA a 7600K and a 6600K with Intel and RMA the Gigabyte board just in case. Confused Face

Gigabyte is fast, emailed me to wait for rma aprroval. Intel is also quick, asked me a few more questions which I just replied and hoping it will be approve soon. Asked wife to RMA the 6600K, don't want to rma both under my name to complicate things. Lucky both cpu are boxed cpu and warranty expires in early 2020.
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apvm wrote: Last weekend was very bad for me, replaced the 6600K with a 7600K that I bought last week and sold the 6600K but when the buyer tested it, the 6600K has this problem, so took it back to test it myself to make sure and the buyer was right, put back the 7600K in the box and the 7600K has the same problem. Tested them with my other motherboard, same problem. Placed back another 7600K (I have two) and problem is gone. Now I have to RMA a 7600K and a 6600K with Intel and RMA the Gigabyte board just in case. Confused Face

Gigabyte is fast, emailed me to wait for rma aprroval. Intel is also quick, asked me a few more questions which I just replied and hoping it will be approve soon. Asked wife to RMA the 6600K, don't want to rma both under my name to complicate things. Lucky both cpu are boxed cpu and warranty expires in early 2020.
CAN bad board keep killing your cpus? I'd say possible
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konsensei wrote: CAN bad board keep killing your cpus? I'd say possible
I think so too and that is why I left my daughter's PC with another 7600K alone. By the way, emailed support yesterday for RMA and just received RMA number and instruction to send in the motherboard, too bad it is to California, will have to use a friend's company Fedex account to cut down the shipping cost.

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