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Windows 7: New PSU-Won't boot

25 Mar 2011   #11
Sardonicus

Windows 7 Home Premium 64 bit
 
 

Have you tried plugging in the 8 pin PSU connector, instead of the 4 pin connector.


My System SpecsSystem Spec
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25 Mar 2011   #12
johnwillyums

Windows 7 Home Premium 64 bit
 
 

Not sure what you mean p5. There's a 10 pin (top right in the pic of the psu) and an 18 pin bottom right. These connect to the 24 pin going into the mobo on the right hand side.
The yellow plug is a 10 pin (only 8 active) going to an 8 pin ATX 12 volt on the top left of the mobo. I don't seem to have a 4 pin connector.
I'll try what flig suggested. Back in a minute as I have t0 reconnect the monitor and switch this pc off. This is getting me down.
My System SpecsSystem Spec
25 Mar 2011   #13
Dwarf

Windows 8.1 Pro RTM x64
 
 

The CR2032 coin cell battery only provides power to maintain the CMOS and RTC (Real Time Clock) when the computer is disconnected from the mains supply. Its presence, or lack of it, has no effect whatsoever on the normal running of the computer, save that if it was missing/dead it would just simply mean that you would need to reset the BIOS settings each time you apply mains power after having said power removed.
My System SpecsSystem Spec
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25 Mar 2011   #14
Sardonicus

Windows 7 Home Premium 64 bit
 
 

Quote   Quote: Originally Posted by johnwillyums View Post
Not sure what you mean p5. There's a 10 pin (top right in the pic of the psu) and an 18 pin bottom right. These connect to the 24 pin going into the mobo on the right hand side.
The yellow plug is a 10 pin (only 8 active) going to an 8 pin ATX 12 volt on the top left of the mobo. I don't seem to have a 4 pin connector.
I'll try what flig suggested. Back in a minute as I have t0 reconnect the monitor and switch this pc off. This is getting me down.
Take a look at image number 10.
All about the various PC power supply cables and connectors
My System SpecsSystem Spec
25 Mar 2011   #15
Anak

Microsoft Community Contributor Award Recipient

Win 7 Home Premium 64bit Ver 6.1.7600 Build 7601 - SP1
 
 

Quote   Quote: Originally Posted by johnwillyums View Post
I don't know Mike. The battery seems to be seated ok and I do have a green and yellow LED on the mobo plus a blue light behind what I take is a start button on the mobo. Would I still have those if the battery was dead?
Here's a pic of the little front panel header pins:
John I have noticed whenever I worked on the MB the connections should be marked to match where those header pins would go...Steve


Attached Thumbnails
New PSU-Won't boot-johnmb.jpg  
My System SpecsSystem Spec
25 Mar 2011   #16
Sardonicus

Windows 7 Home Premium 64 bit
 
 

You power supply is an
ATX12V v2.31 / EPS12V

I would use the 8 Pin PSU connector that came with your PSU.
The 8 Pin PSU power connector, like the 4 Pin PSU power connector
is what you plug into the motherboard for power.

You know, that 8 slot white power connector on the motherboard that many people only plug the 4 pin connector into.
My System SpecsSystem Spec
25 Mar 2011   #17
Anak

Microsoft Community Contributor Award Recipient

Win 7 Home Premium 64bit Ver 6.1.7600 Build 7601 - SP1
 
 

For everyone else here are the connectors John is working with.
New PSU-Won't boot-0000.jpg
Professional Series


My System SpecsSystem Spec
25 Mar 2011   #18
Sardonicus

Windows 7 Home Premium 64 bit
 
 

Quote   Quote: Originally Posted by Anak View Post
For everyone else here are the connectors John is working with.
Attachment 145499
Professional Series
Ok, I see.
Great.
Disregard my posts!
My System SpecsSystem Spec
25 Mar 2011   #19
johnwillyums

Windows 7 Home Premium 64 bit
 
 

Anak. Yes I have followed the diagram in the manual, it does specify where the pins go.
Flig, I tried what you suggested, unplugged everything except the 24 pin ATX and the 8 pin 12v ATX. Nothing at all happened, no fans no nothing.
P5. Maybe this is where the problem lies. I don't seem to hjave an appropriate cable for the 12v ATX at the top left of the mobo. I can't find one in the Corsair cable bag that will fit. This is why the 12v ATX is yellow in my pic. It's the old one from my previous PSU.
I'll have another look but I couldn't see one before. Does it matter that some of the pin sockets have a rounded end and some don't. The cables supplied by Corsair do not include one with the same pin profile as the old one I'm using.
I'll take it out and have another look.
Remember this thing actually started, fans, power etc once, but I stopped it because I did't have the monitor connected and it hasn't started again since.
My System SpecsSystem Spec
25 Mar 2011   #20
QuackPot

Windows 7 Professional x64
 
 

I had a problem like that. Turns out one of the pins in the 24pin cable was bent and I have to twist it a bit and it solved the problem.
My System SpecsSystem Spec
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 New PSU-Won't boot




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