PC keeps turning off during booting.

MrJohnSherry

MrJohnSherry

MrJohnSherry

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Recently I had to change my power supply, fitted it, and got it all set up for the components. When I tried to boot it however, it gets as far as 'Starting Windows' then the PC will just turn off. Initially it would constantly restart and restart in a constant loop until I turned it off at the wall or on the power supply switch. The weird part is, if I leave it for half an hour or so it will usually always reach 'Starting Windows' but if I tried straight after it turns off it won't make it that far before turning off.

At my wits end here, tried everything, checked the connections, disconnected all the components one by one to see if it's a memory fault or something, same thing - except it will be accompanied by beeps. Replaced the thermal paste on the CPU incase it was overheating and no luck.

Any ideas? I don't have a volt checker to check the PSU.
 
MrJohnSherry said:
Just the ones for when RAM is missing or not put in properly. It doesn't happen any other time than when the ram was missing.
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Which PSU ? Whats your setup ? believe it or not, the was a phase not so long ago where certain power supplies were not fully compatible with certain hardware, and from your description, I would say straight away that the new PSU is letting you down, Windows boot process is actually quite stressful on the system and in effect is quite a good test in the beginning for overclockers, everything in your machine is hard at work, CPU, RAM, Motherboard, Hard drives, PSU etc.....
 
Jamin280672 said:
Which PSU ? Whats your setup ? believe it or not, the was a phase not so long ago where certain power supplies were not fully compatible with certain hardware, and from your description, I would say straight away that the new PSU is letting you down, Windows boot process is actually quite stressful on the system and in effect is quite a good test in the beginning for overclockers, everything in your machine is hard at work, CPU, RAM, Motherboard, Hard drives, PSU etc.....
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It's not an overclocked system, just a friend's who stopped working. It completely blew out a 750 power supply but from the set up I was advised a 500 would work. It has 8gb Ram, a Sapphire RX 560 Pulse 4Gb, a 260 SSD and an i5 running at 3.6, can't remember the number at the moment, could report back in a day or two with that if required.
 
What make and model psu though? You say 500w but if it's a cheapo one it won't have anywhere near 500w on the 12v rail where it's needed. If the old psu blew then it could have taken other components with it. What make and model was that one?
 
MrJohnSherry said:
It's not an overclocked system, just a friend's who stopped working. It completely blew out a 750 power supply but from the set up I was advised a 500 would work. It has 8gb Ram, a Sapphire RX 560 Pulse 4Gb, a 260 SSD and an i5 running at 3.6, can't remember the number at the moment, could report back in a day or two with that if required.
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Not saying its overclocked, I was just stating that to give you an idea of how much stress Windows boot puts on the system, like pastymucher says, if you cheaped out on the PSU, theres your problem straight away, plus cheap ones don't offer you the protection circuits either, so if anything goes wrong it easily has the potential to kill anything attached to it, which is everything in the PC.
 
The new one is just a non-modular ******** 500w, the old one is a Alpine Switching Mode 750w,think the model number is JSP-750P12P. Sorry for the late reply guys, been a really busy day lol
 
There used to be a way of getting older versions of windows to scroll it’s boot sequence on a text screen so you could follow at what stage the boot was. That way you could see where it was stalling or hanging. Don’t know if that’s still available ?
 
It could just be that the new one is simply faulty out of the box, it happens.

Older versions of Windows used to scroll the details it was currently loading when safe booting, I'm not if it does anymore, I've never had any reason to safe boot my machine, but you could give it a try.
 
MrJohnSherry said:
The new one is just a non-modular ******** 500w, the old one is a Alpine Switching Mode 750w,think the model number is JSP-750P12P. Sorry for the late reply guys, been a really busy day lol
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Well that original psu is less than £25. A so called 750w psu for less than £25 says it all really. It is highly probably that that piece of junk has taken other components with it. As it's starred out I presume the new psu is another retailer's own brand psu that costs less than £23? More junk. The psu is not the place to save money!!

The only way you are going to find out what is dead is by switching components with known working ones one at a time. That's if you have a motherboard/cpu/memory or even a gpu that is compatible with his build. The blown psu could have killed any one or even all of those and maybe even the hdd/ssd.
 
pastymuncher said:
Well that original psu is less than £25. A so called 750w psu for less than £25 says it all really. It is highly probably that that piece of junk has taken other components with it. As it's starred out I presume the new psu is another retailer's own brand psu that costs less than £23? More junk. The psu is not the place to save money!!

The only way you are going to find out what is dead is by switching components with known working ones one at a time. That's if you have a motherboard/cpu/memory or even a gpu that is compatible with his build. The blown psu could have killed any one or even all of those and maybe even the hdd/ssd.
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I wouldn't say its blown parts as he getting as far as windows boot process, it wouldn't even post if something serious had gone, however, I completely agree with you, PSU is one place you don't want to skimp, change the PSU for at least something decent, even if its 2nd hand, its looking more and more like that's the fault, a mid range PC with a piece of junk extremely low end PSU.
 
Cheers guys, sorry I am only replying now, been extremely busy! Thought the PSU may be the problem, but as I am completely oblivious to what I should be looking for (never had to change one before) can you guys recommend me some? Cheers!
 
Others will no doubt chime in with specifics, but you really ought to be looking at 650W or thereabouts, and spending 60-80 quid on it.
EVGA, Seasonic, XFX, Superflower are among the brands to be looking at.
 
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