Solved PC start and stop loop, now nothing

August 22, 2020 at 05:13:47
Specs: Windows 10
Current Problem:
Computer froze mid gaming session, powered off then back on and it was stuck in a loop of resetting itself every few seconds. Checked all connections and re-seated my single 8gb ram stick, computer powers on and stays on but no peripherals or display with no beeps.

Past Problem:
This happened once before when I tried to install new ram, mixed 2 8gb corsair sticks with one 8gb adata stick and this same problem occured with no peripherals or display, was only resolved after I removed the new ram(Corsair 8GBx2) and went back to 1 stick(Adata 8GB). Any ideas?

Specs: Intel i5+ 8400 2.8GHz CPU, 8GB DDR4, NVIDIA GeForce GTX 1050 Ti 4GB, 1TB HDD, 16GB Intel Optane, WiFi & Win10 Home, evga 450w psu, ASRock Z370 Pro4 mobo

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✔ Best Answer
August 28, 2020 at 13:52:58
Just started working again, one of the connections I imagine


#1
August 22, 2020 at 06:01:39
I think the clue is the RAM mixture...?

What make and model of computer do you have?

Are you "absolutely" certain the additional RAM is correct type/specs for the system?

Presuming you can get it to boot OK with the original single stick... log into crucial.com and use their free (and safe to use) scanner to determine what RAM is OK for the system.


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#2
August 22, 2020 at 06:18:19
Thanks but the ram issue was a past problem, currently the computer froze and is exhibiting the same symptoms as the past problem without me messing with the RAM

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#3
August 22, 2020 at 06:27:01
Posting system specs is important - motherboard, CPU, RAM, video card, etc. What about the power supply? Is it a decent name brand unit? Adequate wattage?

"mixed 2 8gb corsair sticks with one 8gb adata stick"

I know you said this was a past problem, but 24GB RAM? Did you check the motherboard specs to make sure it supports that much & how the sticks need to be configured?


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Related Solutions

#4
August 22, 2020 at 06:48:25
...and this same problem occured with no peripherals or display, was only resolved after I removed the new ram and went back to 1 stick

Your reply in #2 is is a little unclear...

With only the "original" (adata) single stick installed - does the problem persist; or have you used one of the corsair sticks and problem persists...?


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#5
August 22, 2020 at 07:06:26
Original single stick Adata, couldn't get the corsair sticks to work in it at all. Here are the computer specs though.


Intel i5+ 8400 2.8GHz CPU, 8GB DDR4, NVIDIA GeForce GTX 1050 Ti 4GB, 1TB HDD, 16GB Intel Optane, WiFi & Win10 Home, evga 450w psu, ASRock Z370 Pro4 mobo

Problem started again when the computer froze, with only the single adata stick in. The corsair RAM sticks attempt was over a year ago, I only bring it up as its exhibiting the same symptoms

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#6
August 22, 2020 at 07:20:42
Ok - good to have clarification - and specs...

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#7
August 22, 2020 at 07:27:48
A few things come to mind...

PSU maybe less than happy; are its cooling bents clear and any fans associated with it OK? Are you able to check it volts out - using a decent test meter of course?

Cooling fan on the cpu - is it still firmly affixed - and clear of dust?

Is the HDD OK; is it starting to fail? Have you perhaps run a test routine on it?

Do you have the manual which may also offer both possible problems and test points etc.?

https://www.asrock.com/MB/Intel/Z37...


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#8
August 22, 2020 at 07:34:43
Couple more clarifications, PSU is 450w not 1050w. Intake vent on the bottom of the computer was completely clogged with dust. Don't have a voltage tester, the inside was fairly dusty. CPU fan fixed firmly on CPU, no display or peripherals don't know if I can run any tests

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#9
August 22, 2020 at 08:25:15
Time to strip down the system as much as possible and blow out the dust...; maybe suck some of it out too.

And generally blow over the whole system.

Ideally use compressed air cans; although - at a distance - a vacuum cleaner with a blow function is OK - at a distance. Even a decent hair dryer - in COLD setting obviously.

But compressed air is best.


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#10
August 22, 2020 at 08:33:12
> at a distance

You need to explain that. Why at a distance?

-- Jeff, in Minneapolis


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#11
August 22, 2020 at 08:37:24
Some vacuum cleaners in blow mode are/might be a little too powerful - according to some... So best to err on the side of caution?

We used to use them blow out the dust form old style crt tv sets in days of yore (when they were full of valves (tubes) too). They weren't quite so fragile etc. as modern kit in some respects...


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#12
August 22, 2020 at 08:44:06
All blown out, vents cleared, same results though. Powers on, no peripherals, no display, no longer looping restarts

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#13
August 22, 2020 at 09:18:40
Not even cooling/cpu fans even?

Presuming so... I'm inclined to look at the psu as a starter - as possible failed or failing...


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#14
August 22, 2020 at 09:29:13
Sorry, yes all the fans and LED lighting were working. By peripherals I meant the mouse, keyboard, monitor

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#15
August 22, 2020 at 09:41:45
"PSU is 450w not 1050w"

Is it EVGA brand or something else?

A vacuum should never be used on electronics because of the risk of electro-static discharge from the hose. That's why it's recommended to use compressed air. Either a can of "duster" (I get Ultra Duster at Harbor Freight) or as long as you're careful, you can use a compressor like the type used for inflating tires or spray painting. When I do that, I usually wedge something into the fan blades so that they don't spin out of control.

Have you tried to boot up with a bare-bones config? Take out the graphics card & connect the monitor to the motherboard port. Remove all other cards, if there are any. Unplug the HDD(s), optical drive(s), & ALL external devices other than the keyboard. You said you only have one stick of RAM so make sure it's in the proper slot...snap it in/out a few times to ensure a good connection. Then try to boot & see if you can access the BIOS. If not, are there are beep codes?


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#16
August 22, 2020 at 15:45:38
> A vacuum should never be used on electronics because
> of the risk of electro-static discharge from the hose.

Okay, That's the reason for "at a distance" !

And why it's okay to use a vacuum on vacuum tubes!
Vacuum tubes aren't sensitive to electro-static discharge
the way most integrated circuits are.

-- Jeff, in Minneapolis


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#17
August 22, 2020 at 16:24:03
I think the feeling is/was in early days of computers that a heavy blast might damage the cpu cooling fan. Static discharge was never mentioned in any comments about it, though I can see the point.

One did not blast air onto hot valves (tubes), rather let them cool down a little first.


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#18
August 22, 2020 at 18:12:04
Why using only one memory stick? That leaves out dual channel operation.
Have you tried operation with the 2 corsair sticks and no Adata stick?
Check the manual which slots to use is you have more than 2 memory slots.

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#19
August 22, 2020 at 19:11:14
The board manual doesn't have a recommendation for running a single stick, but if you're going to run two, it says to use DDR4_A2 + DDR4_B2.

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#20
August 22, 2020 at 20:52:14
The computer only came with one stick

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#21
August 23, 2020 at 07:21:46
What I meant was, the manual doesn't make a recommendation as to which slot to use if only running one stick. Most board manufacturer's include that info in the memory section of the manual.

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#22
August 23, 2020 at 08:09:10
Have you tried testing with the single stick in each slot in turn?

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#23
August 23, 2020 at 14:43:53
Yes tried stick in ever slot, same result. Computer powers on, no keyboard, mouse, or display. No beep codes

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#24
August 23, 2020 at 14:55:41
Check “all” on board (plug in) connectors; especially those from the psi.

With all power removed(obviously) remove each one and re-insert firmly.

Seldom happens, but occasionally a given connector fails to make sound connection.

I’m still inclined to suspect the psu...


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#25
August 24, 2020 at 09:02:47
Tried, same result. No display, keyboard, or mouse lights

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#26
August 25, 2020 at 13:06:47
Did you remove the CPU cooler at anytime? If you did, did you completely remove all traces of the old thermal material & then apply thermal paste (& apply it correctly)?

Did you unplug the power supply from the board? If you did, did you reconnect the 8-pin power plug (top left corner of the board) for the CPU?

If you're sure you've checked & double checked everything, it seems there's only two possibilities - bad PSU or bad CPU.

BTW, did you try the bare-bones approach I mentioned in response #15?

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#27
August 25, 2020 at 14:32:44
Should I get display, mouse and keyboard functionality even with no RAM sticks? If so what should be showing on the screen?

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#28
August 26, 2020 at 06:04:41
You ignored my questions.

Booting without RAM should cause beep codes, unless either the CPU or board are bad. You have an internal speaker connected, right? Header #15 - SPK_PLED1 - lower right hand corner of the board?
https://images-na.ssl-images-amazon...


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#29
August 26, 2020 at 07:31:35
Yes, internal speaker is there. Yes I tried the bare bones approach, tried a new mobo and another CPU (Exact same models as my current ones) with the same results

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#30
August 26, 2020 at 07:36:02
"any" beep codes?

If so what is the sequence?


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#31
August 26, 2020 at 10:14:02
"I tried the bare bones approach, tried a new mobo and another CPU (Exact same models as my current ones) with the same results"

Randomly replacing parts isn't an effective way to troubleshoot, it can get expensive too. So now that you've done that & have gotten the same results, what does that tell you?


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#32
August 26, 2020 at 17:12:47
Have you tried without the Video Card?? Using the onboard VDU?

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#33
August 28, 2020 at 12:55:36
Problem solved, thanks for all the help fellas

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#34
August 28, 2020 at 13:41:45
And the solution was...?

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#35
August 28, 2020 at 13:52:58
✔ Best Answer
Just started working again, one of the connections I imagine

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#36
August 28, 2020 at 15:21:40
mmm happens and one never really knows.

But I suspect all the unplugging and replugging etc. may have cleaned whichever connections weren't as they might have been?

I'd be inclined to ensure that critical personal files are safely copied elsewhere to external media - just in-case... A usb hard drive at least; and for photos - the usual serious item for many - to dvd as well.


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#37
August 28, 2020 at 16:06:14
Good advice, thanks again everyone

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