After turning system off machine will no longer boot unless a stick of ram is removed

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n0rsey

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Oct 17, 2017
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i could not get my 1600 to post with both sticks of ram, so i got my buddy to come over and flash the bios (i had no idea what i was doing) so he did and i got both sticks working! until i turn the PC off or put it to sleep, then it won't post with both sticks, i then have to take one out to get it to post, and if i boot with one stick, then turn off and boot with the other, i can then get both sticks to work, until i turn the pc off, once i turn it off i have to re seat the ram, and boot multiple times with only one stick. at some point the bios will start in safe mode, i can then put both sticks in, and it works, until i switch off
any ideas?

cpu r5 1600
gpu gtx 1060 3 gb
mobo asus b350m-k
psu thermaltake rgb 600w
ram corsiar vengence lpx 2400mhz 2x4gb
 
Solution
Chicano
You said this motherboard worked ok out of the case (breadboarded)? Have you repeated that? If it works.. Id suspect something to do with the case... soething sticking out from the bottom may be making contact with the case, the motherboard screws may not be properly insulated.

Another component I'd suspect of is the PSU.. there have new build boot issues where the new PSU was causing it.
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Chicano

Chicano

Judicious
Aug 29, 2011
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It may be a RAM issue, a RAM socket issue (dust or grime), or a BIOS corruption issue.
1) See if cleaning the RAM sockets with a soft cotton rag with a bit of ethanol alcohol prying it in the sockets with a suitable object; (a standard paper clip with the cloth wrapped around works).
2) If that doesn't help, run Memtest86 and look for the number of RAM errors in the results. Run it with each RAM module installed only to determine which module is bad.
3) If no RAM errors are found do the BIOS reset and finally if necessary the BIOS restore.

Memtest found no errors:
https://www.sevenforums.com/attachments/tutorials/92282d1282320804-ram-test-memtest86-capture.png

Memtest86found errors:
https://linustechtips.com/main/uploads/monthly_2016_03/image.thumb.jpeg.06fd50da9b431ee7e94b0b4496446611.jpeg

Memtest86 download
https://www.memtest86.com/


Start with a BIOS reset and if necessary follow with a BIOS Recovery.

Option A) Bios reset:
1. Remove AC power or turn off the PSU
2. Remove the battery
3. Move the BIOS jumper to pins 2 & 3
4. Press and hold the power button for 60 seconds
5. Wait 10 minutes
6. Revert 1 through 3 and try the computer

Option B) Bios recovery:
1. Remove AC power or turn off the PSU
2. Remove the battery
3. Remove the BIOS jumper
4. Press and hold the power button for 60 seconds
5. Wait 10 minutes
6. Revert 1 through 3 and try the computer
 
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hellraiser06

hellraiser06

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Aug 11, 2006
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I had this issue with my ASUS ROG strix b350f motherboard in which whenever I switched off my PC, it wont turn on. The work around was to switch off the PC at mains (or at the PSU). Wait for 2 3 minutes and power on the mains. Then press the power button on the PC case and my PC would turn on. Could you see if this works for you?

If the above does work for you, then the permanent resolution in my case was to update the BIOS to the latest. See if this helps!
 
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n0rsey

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Oct 17, 2017
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just an update, that my ram is CMK8GX4M2A2400C16 8GB (2x4GB) which is not on the QVl of my mobo. so could that be the issue? if so why can i sometimes get it to work with two, and always with one?
 
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hellraiser06

hellraiser06

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That can be a likely culprit, but people run RAMs that are not on their QVL all the time (myself included). And, the RAM that you have is extremely popular. Before concluding that this is a RAM issue, could you please check and confirm what I said in my post above?
 
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Chicano

Chicano

Judicious
Aug 29, 2011
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35,490

The RAM brand and model could be the cause only if this is a new build... but if was working previously that's not it.
Why it works with two RAM modules off and on, and always with one module, could be due to RAM installation errors.. it may botton down on the sockets sometimes but not always. Could be dust in the sockets... (it take a very small amount to cause issues)... but since it's a relatively new build, the most likely cause is BIOS corruption. Sometimes when you have worked on the components, removing and reinstalling them, specially if you do exactly what you've been doing with the RAM modules (though handling other hardware can cause the same)... that can cause BIOS settings corruption... so the first advice I gave you should be done before anything.

I've found through experience that when a boot issue appears without apparent cause, having a system in good (specially perfect) condition, it's almost always caused by BIOS corruption... you have to keep in mind the BIOS manages all components it detects on the motherboard and it has to detect them on every start or restart (that's what goes on during the BIOS post), so when it has an issue detecting some components depending on the importance it has on the system, it may not finish posting, it may pause during it, and report the issue, or beep... or not beep if the mobo doesn't have a speaker... and it may also not even start posting, so what you get is a blank screen.
 
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N

n0rsey

Prominent
Oct 17, 2017
7
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510
This is a brand new build, I had an msi b350 mobo that refused to post, I rma'd it and got this asus, when I did the test bed out of the case it posted with both sticks, when I put it inside the case it only posted with one, when I updated the bios it worked with both for one day :/

I will re do the bios and see if that help? I cleared CMOS and that didn't fix the issue so, maybe a fresh install?

P.s I can one stick of ram in either socket, so both sticks work, but only one at a time
 
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N

n0rsey

Prominent
Oct 17, 2017
7
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510
Ok: update time, so i re flashed the bios, cleared CMOS, all the standard stuff, and i got two sticks working! i could even turn the PC off, so i shut it down a couple times to test and it was fine, but on the third try, nothing so i went back to one stick and re re flashed the bios, and could not get it to work with two sticks on the second re flash
 
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Chicano

Chicano

Judicious
Aug 29, 2011
5,071
29
35,490
You said this motherboard worked ok out of the case (breadboarded)? Have you repeated that? If it works.. Id suspect something to do with the case... soething sticking out from the bottom may be making contact with the case, the motherboard screws may not be properly insulated.

Another component I'd suspect of is the PSU.. there have new build boot issues where the new PSU was causing it.
 
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