( breakdown ) Computer turns on, and in a few seconds it turns off

[Cid111]

Hello, these days I've been tinkering with several PCs and at the same time looking for new acquisitions.. and in one of them I've encountered a problem that complicates my life a bit.

A PC that, when turned on, showed some activity for a few seconds and then turned off, then turned on again and turned off again. Thinking it could be the power supply, which apparently had a little issue with the plug, I replaced it, although with a less powerful one but semi-new and proven to work well. It turned on for the first time with the power supply and stayed frozen on the first image of the motherboard logo, then I turned it off and turned it on again. It turned on but the screen showed nothing, thinking it was the graphics card, I replaced it and restarted again and I got the same problem as at the beginning, it turns off and on, always without showing anything on the screen. My last resort, the static, I opened it up and, as if it were a stuffed animal, with one foot on the ground I hugged it from all the imaginable sides. I turned it on again and the same thing...

Here is my dilemma, the motherboard or the RAM? The PC is old and has DDR2, so I don't have any at home and can't do tests... so I have to do it by elimination, any ideas? The only thing that comes to mind is to call an exorcist or throw it out the window.....

Thanks in advance

[Fassou]

You turn on the equipment, or when it turns off by itself, it just turns back on to turn off again without you touching it.

Have you checked that it's not a temperature problem?

Bye!

P.D.: If you're setting up a repair shop, you'll give us a share of the profits, right?

[Sylver]

Hello

Have you already mounted the new heatsink? Maybe because of problems with this one it won't start. Now when you confirm if you have mounted it or not we will see.

Another thing that could be is the RAM, sometimes it gives problems for reasons that I have never been able to understand and that surely many colleagues here will know how to explain, but on many occasions I have had to change the modules of place, start with only one or things like that, but it always worked.
Try with it and depending on what happens we will see.

Greetings!

[Cid111]

The truth is, I need to give explanations because I haven't said a word for months and now in two weeks I'm getting my ass kicked. The thing is that a friend gave me a dual core pc, from which I took out the scythe cooler and the ati hd 4850 and mine is the one in my signature. As I must have a poltergeist at home, the motherboard of mine has decided to die or the motherboard or the power supply because it doesn't turn on, but as it is usually more frequent I lean towards the motherboard, which is also not a big deal. (although possibly you will see some post of mine pulling my hair... )

On the other hand I have dedicated myself to fixing the dualcore and as in kings I collected 300e I have an idea of selling my i5 and moving to the i5 2500k series and an asrock gen3 as I have already seen recommended in other posts. The motherboard and the new processor I am waiting to order and with the old dual core I am struggling to get it to work.

The pc turns off and turns on by itself :S, and I'm asking on facebook if anyone has a ddr2 module; I've changed it from slot but nothing is the same, the motherboard is not then no?
Ha! yes, temperature can't be it the cooler is new and the pc doesn't have time to heat up, it does it from the beginning.

[Sylver]

Make sure you have mounted the heatsink correctly and have applied the thermal paste properly, so that it doesn't happen like other times when it was seen that due to a bad mounting of the heatsink the micro reached 87º

You can easily test the power supply, take a wire or a simple paperclip and extend it, in the main connector that goes to the board plug one end of the wire/clip into one of the black cable holes and the other end into a green cable hole (with the power supply activated and plugged into the current) if it turns on (the fan will rotate) it is perfect and is ruled out.

Greetings!

[Cid111]

@Sylver:

Make sure you have mounted the heatsink correctly and that you have applied the thermal paste properly, so that it doesn't happen like other times when due to a bad heatsink mounting the micro reached 87º

You can easily test the power supply, take a wire or a simple paperclip and extend it, in the main connector that goes to the board plug one end of the wire/clip into one of the black cable holes and the other end into a green cable hole (with the power supply turned on and plugged into the current) if it turns on (the fan will rotate) it is perfect and it is ruled out.

Greetings!

Wow, great! XD ruled out… with a paperclip XDD what good XD

ok, I'll check it tomorrow, but as it was screwed in I find it strange it would be bad (If not, I wouldn't have been able to screw it in, right?), although in case I was a rat with the paste I'll put a little more. Tomorrow I'll tell you guys

[Sylver]

@Cid111:

Wow, great job! XD Discarded… with a clip XDD that's good XD

ok, I'll check it tomorrow, but since it was screwed in, I'm surprised it would have looked bad (if not, I wouldn't have been able to screw it in, right?), although just in case I've been stingy with the paste, I'll put a little more. Tomorrow I'll tell you more

It's a simple but effective testing method

The thing is that some heatsinks can be confusing when mounting them, I'll put here a proof of it so you can understand:

It depends on the processor, but this happened in this same forum and in that case the processor reached 87º, in another it could have burned or not started at all, although with all the safety systems that processors and motherboards have now, it's almost impossible for them to burn.

Best regards!

[Cid111]

Well you give me a joy with the fact that they can't be burned

Tomorrow I'll try to upload a photo, to see if I'm a bit animal with the screwing, and another with my scythe mugen paw that has a touch similar to the one you've shown me in the photo, the anchorage is very different to my regret.

[Cid111]

Hello!

I have already installed the heatsink and mounted my new motherboard and processor, it's going very well at first, I put the injured pin down so that the weight of the heatsink pushes it, and it's working very well, according to the bios it's at 50 degrees +/- I think it's a good temperature but I'm a bit lost with that. I installed everest.. but I don't like it and the 3dmark.. it doesn't tell me what I want.. but well that's another post.

Here I wanted to thank you for your help

P.D: The other pc.. I think it's dead, before it would turn on and off and now it just turns off… anyway...

[Sylver]

I see that temperature as being a bit high for being measured at rest… Try Core Temp, which is a program that shows the temperature of all the cores.

Did you apply the thermal paste and everything correctly, didn't you?

Best regards!

[Cid111]

@Sylver:

I see that temperature as a bit high to be measured at rest… Try Core Temp, which is a program that shows the temperature of all the cores.

Did you apply the thermal paste and everything correctly, didn't you?

Best regards!

Well, I'll look into it tonight, I'm in class right now, it's crazy that such an expensive heatsink doesn't work… yes, I put the paste on it, it's white like the one that came with the core, I've been looking and there are several types of paste :S

It's quite a world..

[Sylver]

Yes, it's a whole world... that's where the business is for manufacturers, and it's not for nothing, but because there are many types of customers.

I very much doubt that this heatsink won't work, because with this type of heatsinks, just by placing them correctly on the processor with a little bit of well-applied paste, even without a fan, they already dissipate a high percentage of the heat, which makes me think that something is not properly mounted there or that there may be a problem with the sensor. When you install Core Temp we will check it.

Regards

[Cid111]

Temperature readings:

¿ Power 11.8 Watts? Solo?
¿ Que is Tj.Max? 98ºC

Core 0: 36ºC
Core 1: 33 ºC
Core 2: 36 ºC
Core 3: 33 ºC

-> These data with 8 hours of being on with little activity, I think it's great.
But I don't control temperature statistics, but let's say that 36 is my body temperature and I don't melt silicon XD

Great program Core temp, thanks

[Sylver]

Friend, that's much better, 50ºC was not very normal at rest that we can say…
Indeed, those temperatures are very good :sisi:

And the TJ Max is the temperature limit that the processor can withstand without suffering damage

Best regards!

[Cid111]

@Sylver:

Friend, that's much better, 50ºC was not very normal at rest that we can say…
Indeed, those temperatures are very good :sisi:

And TJ Max is the temperature limit that the processor can withstand without suffering damage

Greetings!

okay, thank you very much, so the pc is ready for now. I'll wait for the graphics to go down and in the meantime, I'll play

Hugs!

[Sylver]

@Cid111:

vale, muchas gracias, entonces pc listo por ahora. Esperare a que bajen las graficas y mientras a jugar

Un abrazo!

Me alegro de que ya esté listo y todo correcto, y se agradece el regreso para comentarlo una vez resuelto :sisi:
Ahora a disfrutar de tu equipo y para cualquier cosa ya sabes por donde pasarte

¡Un saludo!