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Windows 7: PSU went up in smoke. New PSU won't boot PC

05 Jul 2016   #11
RoasterMen

Windows 10 Pro 64-bit
 
 

What's the brand and model?


My System SpecsSystem Spec
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05 Jul 2016   #12
bigmck

Windows 7 Home Premium 32-Bit - Build 7600 SP1
 
 

Quote   Quote: Originally Posted by probuddha View Post
I have a 3 yr old PSU from my previous unit that was just lying around in the corner. Would it be safe to attach that PSU for testing?
If your fans are running, the PSU is OK. Double check all cables are connected correctly.
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05 Jul 2016   #13
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Quote   Quote: Originally Posted by bigmck View Post
Quote   Quote: Originally Posted by probuddha View Post
I have a 3 yr old PSU from my previous unit that was just lying around in the corner. Would it be safe to attach that PSU for testing?
If your fans are running, the PSU is OK. Double check all cables are connected correctly.
Not necessarily (though you are likely correct considering that this is a new supply). The 5V or 3.3V rails may not be working. Both would prevent the computer from booting, but would still let the fans spin (potentially). Not hard to debug with a meter, but may be beyond the OP's skill set.

I second your comment on checking all of the connections and making sure they are tightly connected though.
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06 Jul 2016   #14
westom

 
 

Quote   Quote: Originally Posted by probuddha View Post
I have a 3 yr old PSU from my previous unit that was just lying around in the corner. Would it be safe to attach that PSU for testing?
Why not? If a power supply cannot provide power, then circuits that have existed, long before PCs existed, would simply power off that PSU. Low power never damages electronics. But many fear because low power is problematic to motorized appliances. Many fear it rather than learn what it does and does not do.

Most every computer only consumes less than 350 watts. Obviously. It is not so hot as to also toast bread. Mostly consume just over 100 watts most of the time. Selecting a supply on watts is bogus. But since most computer assemblers have no idea how electricity works, then we tell them a 300 watt computer needs a 600 watt PSU. Then help lines are not clogged teaching computer assemblers basic electrical concepts.

Move on to your problem. Do you know many components in a power 'system'? PSU is only one. Are all working? CPU is not permitted to operate until a power controller decides to permit it. No CPU operation means BIOS, RAM, and so many other suspects were irrelevant. If a CPU does not even start, then a BIOS cannot enable any other computer parts.

Get facts. For example, what specifically in that PSU failed? That information makes possible replies from a fewer who actually know this stuff.

Get a meter and request some instructions. Make sure all parts remain connected and unchanged. Then use that meter and instructions to obtain some three digit numbers. Then a next reply exonerates or accuses each specific part - without wild speculation. Without phrases such as 'maybe' oir 'did you try'.

Without numbers, then one is told to select a supply on watts. Without numbers, then no informed reply can identify a defective part. Two options exist. Keep replacing good parts until something works. Also called shotgunning. Or do what is recommended to have replies from others who actually know this stuff. Meanwhile what specifically failed? That says so much about what else may have been damaged. And how to avert future damage.
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08 Jul 2016   #15
probuddha

Win 7 Professional 64 bit
 
 

Thanks for your replies, guys. I took the mobo, the RAM and CPU to a local pc repair shop and they said that the mobo has been affected. Now I am wondering if it's worth trying to repair the motherboard or buy a new one instead.

What do you guys suggest?

Many thanks
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08 Jul 2016   #16
townsbg

Windows 7 pro 64-bit
 
 

You likely wouldn't be able to repair the motherboard. Did he say what was wrong with it?
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08 Jul 2016   #17
probuddha

Win 7 Professional 64 bit
 
 

They checked the mobo for a while and said that it has been short circuited and apparently it was giving shocks.

Now this is not a big pc repair shop in any way and I don't have prior experience with them. I took my unit there to detect which component in specific was failing.

This is why I am thinking of submitting the mobo to the official Gigabyte Servicing Center
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08 Jul 2016   #18
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

If this board was damaged by a failing power supply, there's no chance of a warranty claim unless you can somehow convince Gigabyte that the power supply is not responsible.

Personally, I wouldn't even bother with attempting to let Gigabyte try to repair it. You'd likely be faced with postage charges, delay, customer service aggravation, and some as yet unknown cost for the repair--assuming it's repairable at all.
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08 Jul 2016   #19
probuddha

Win 7 Professional 64 bit
 
 

It's out of warranty. So I guess buying a new board would be the wise thing to do, right?

Any suggestions for an AM3+ board with SATA 3 headers? My last one had SATA 2, so I am thinking if I get a new board, I might as well get one with SATA 3 headers since I use an SSD as my system drive

Thanks a lot
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08 Jul 2016   #20
bigmck

Windows 7 Home Premium 32-Bit - Build 7600 SP1
 
 

Quote   Quote: Originally Posted by probuddha View Post
Thanks for your replies, guys. I took the mobo, the RAM and CPU to a local pc repair shop and they said that the mobo has been affected. Now I am wondering if it's worth trying to repair the motherboard or buy a new one instead.

What do you guys suggest?

Many thanks
A repair will cost as much as a new computer. I don't know the availability in India, but if you were thinking about buying one maybe soon, this would be the time instead of a repair.
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 PSU went up in smoke. New PSU won't boot PC




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