Computer Shuts Down: Causes & Solutions for Asus P4S333, Pentium 4 1.75GHz, Windows XP, 400W PSU

What can be the cause and how to remove it if my computer suddenly turns off. During this, I did not notice any dependence on CPU usage or any external voltage spikes in the network.
(Operating system - windows xp)

For clarity, I will give the parameters of the computer:
- Asus P4S333 motherboard
- Pentium 4 1.75 GHz processor
-512 frames (they were burned recently - of course they are replaced)
- 400W power supply (also after replacement because it was burnt)

[The faults that I listed next to the components have been repaired and are working properly until today (about 8 months from replacing)]

Do these automatic shutdowns have a hardware cause or are they caused by software? What could be the reason ?

Please help ...

Hello. The first thing that comes to mind is the power supply. Does the computer reset after turning off? Does it stay off? What do the sockets between the power supply and the board look like? maybe they are burned. Regards.

Forgot to add ... Computer is restarting.

I checked the temperatures with the program that I have been using for a long time, i.e. Everest Home.

Percent - 50 ° C
Main dish - 34-40 ° C
Disk - 40 ° C

Hmm is that a lot ??
I think that's enough because normally I had something around 30-40 ° C on the prock. Can such a temperature jump affect the correct operation?

Trying to scan the entire computer with an antivirus program, it may be the reason for the virus that the computer restarts by itself, I used to have several such cases ..

Try to return the bios to the basic settings.

If that doesn't help, reinstall the system.


greetings

I scanned - no viruses.

And the temperature jumps from 39 ° C -51 ° C in a few minutes - if I do something, if it is turned on without any programs or just without any action, it drops to 37 ° C in a short time.

maybe the pentium has it that it is almost impossible to burn check the paste under the processor because it may be too little, maybe the heat sink does not press down as it lies and the machine works then or maybe the tape from the disk change to a new one or the memory does not touch graphics or anything in pci or maybe like a friend who lives in the towers sheep, when the elevator turns on, the companion goes out

Maybe the capacitors are spilled? - but then it would probably hang, not turn off, but seriously it seems to me that it is a framework, scan it and tell us what effects. I used to have it like that, exactly twice

I scanned thoroughly and no viruses.
By tracking the temperature, I noticed that it rises very quickly when I run a program and when I turn it off, it slowly drops.
In my opinion, the temperature jumps are very large from 30 ° C to 54 ° C in a few minutes.
(for the sake of clarity I will add that it dropped from 50 ° C to 30 ° C.)
All the wires inside are fastened, but I noticed that the keyboard cable was practically not in the socket - it was barely sticking (I do not know if it could have any effect, but I am writing just in case)
Currently, the computer runs with an open casing and has a prock of 30 ° C.
As for the equipment:
Ram is no more than 8 months old.
The power supply sits in the computer as much as the frames because when it burned down, the frames would be pulled, but as I say, nothing happened for 8 months.
Oh, the CPU fan sometimes makes a fading noise.
I did not check the paste, but I suspect that it was also thin.
Ps Kondy Ok. Motherboard visually Ok.

scan the ram with MemTEST or whatever else I really think it's a ram!

I scanned with Memtest but I don't know if I did it right because there were over 1000% and 0 errors. (I left it for almost an hour)

Hello, 1 question, since when do you have this type of problem? did they start recently or right after replacing the burnt memory chips and the power supply? Check the condition of the condensers on the motherboard (whether they are bumped). Does the system boot with an error after rebooting? if so, attach a screenshot and write exactly what system you are using (what fixes, etc.). Is a few sec. system slows down before restarting? There can be many reasons for this behavior, but I would bet on a damaged PG or a software problem.
Greetings

marcin_111_ wrote:

In my opinion, the temperature jumps are very large from 30 ° C to 54 ° C in a few minutes.
(for the sake of clarity I will add that it dropped from 50 ° C to 30 ° C.)

So, finally replace this paste under the heat sink, because so far you write a lot, but you have not yet specified what the power supply was before and what it is now, because the only thing you gave is its power.

Power supply before Megabyte MGB 300ATX 300W after replacing Mustang ATX KY 400W.
As I wrote PG in order. Kondy OK.
Now it started to jam, but after cutting it will not move anymore, you have to restart. These are the symptoms of how they burned recently. But memtest shows no errors.

The system starts without errors, only at the beginning as standard, after restarting the scan, there are some errors.

I have found an unconnected Molex for the motherboard (a free socket that was used with the previous power supply.

power supply not too good. since you did not put a new (good quality) paste under the processor, maybe see the fan and clean it from dust. temp under stress (e.g. games) for Athlon under socket And this is not so much again, worse if it was an Athlon 64.

Hello!
First of all, the Megabyte and Mustang power supplies are not a good PSU and even potentially dangerous, it was already widely described on the forum as well as how important a computer element is the power supply (just look and read), and the rest can be seen by a colleague on his own example how it ends . The power supply after the failure of the previous one had to be replaced with a decent one, not something that only pretends to be, and 400W is on the sticker, not in fact. The power supply should be measured with a meter, and not with software because their measurements are very unreliable.
As for cooling the processor, as colleagues advised, it does not hurt to change the paste, clean the heat sink and look at the fan, clean it from dust and lubricate, for example, WD40 or change to a new one.
Testing the frames won't hurt either. If I were a friend, I would look for a good power supply.

Exactly. It would be good to check the voltage from this power supply and the 220V network voltage with a meter while the computer is working - whether there are no drops. These power supplies are almost suicide ... The ripple, unfortunately, cannot be detected with the meter. Sudden restarts are more of a hardware problem. Did you watch the capacitors on the disc?

The heat sink on the prock is best touched physically, because these programs often show the wrong temperature. Some motherboards have such a thing that when the fan slows down they either start a signal using the system speaker or shut down the computer. Do you have too many components in relation to the power of your PSU? In this case, unfortunately, you have to assume that the 400W is only written on the housing :)

To more or less make sure that windows is guilty, it is best to start the computer from a boot floppy or from some bootable DOS board and let it come under dosem and then check if it also turns off by itself.