Computer turns on and off after 10 seconds, why?

Question

motherboards

A friend gave away the RAM, so she installed it, but did not immediately realize that she had a different connector, respectively, she started the computer with this not fully inserted RAM
And from that very moment the computer began to turn on and off after 5-10 seconds I put the
old RAM back in and nothing has changed
I tried to insert one at a time, tried it in different slots, cleaned everything that was possible
Reset the bios, changed the thermal paste (just in case)
Filmed all the details completely, looked for swellings, etc., they were not there
And in what's the matter then?

Answer 1

Carefully inspect the board and memory for physical defects: they could break the slot or (more often - bend the contacts in the RAM slot). (If so, it's easier to find a new motherboard)
If the processor was removed, this also applies to it. The socket should be free of hair, dust, thermal paste, and bent pins.
If the processor is LGA, you can CAREFULLY use a "blue" (abrasive) eraser to wipe the contacts on the processor (do not climb into the socket in any case) and on the memory (It happens because of oxides it does not work).
After that, the memory can be inserted and pulled out 20 - 50 times. To remove oxides from the contacts of the RAM slot. (Be careful not to bend the pins in the slot).
I would like to know the processor, what kind of memory was and what was inserted.
If not completely inserted and launched, there is a chance that something was burned. You can check by inserting a POST card (or at least check the power on the RAM and processor.)

Answer 2

Change the battery. Clean the memory contacts with an eraser, in the slot with a brush. If the memory has several slats, try one in different slots.

Answer 3

How did you manage to reset the BIOS in ten seconds?
What is the screen showing? Maybe there is a message there?
To begin with, remove everything from the motherboard: all cables (USB, SATA), memory, processor, battery. Enable - see if it turns off or not.
In this state, turn off the system - you need to hold the power button for a long time, about ten seconds.
If it works in such an empty form (it is clear that the screen is empty, the squeak is silent, the keyboard does not work), then insert the details one by one.
Where are you geographically - city, district? Maybe someone around here will take a look.
What motherboard? Maybe someone will fit a similar one.

Answer 4

started the computer with this not fully inserted RAM

It's really - "it will stop a galloping elephant and tear off its trunk ..." As soon as the bar began to rest and not get up in the plug, it was necessary to immediately stop raping the mother.
There are several options, but they all lead to one thing - the mother died. RIP
- They bent the contacts in the memory slot
connector - They pressed on the bar with such force that the connector deformed the mother, crumpled and tore the tracks of the printed circuit board.
In any case, the mother is most likely dead, and God forbid that the percent does not burn.

Answer 5

Yes, the only way out is to take and check the power circuits with a multimeter on the motherboard. In fact, nothing was burned in it. You can also try, take out the RAM again and put it back in. maybe they just closed.

Answer 6

There is a high probability that the mother burned out.
Or something in the power supply and the motherboard chipset is overheating.
At home, without special knowledge, you can’t diagnose this in any way. Take it to the SC.

Answer 7

Most likely, the motherboard burned out, check the power circuits, replace the BIOS battery, there may be oxidation of the contacts of the OP, wipe them with a regular wash and remove its traces, this also happens if none of the above helps somewhere short / short the motherboard during which it burned out, or you caused physical damage to the motherboard, it would be better to take the solution to the SC, there you can already navigate from them so as not to finish it off completely, there may still be a significant chance of saving it