MSI motherboard not powering on
killyann
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VOPTIS Posted messages 1341 Status Member -
VOPTIS Posted messages 1341 Status Member -
Hello,
I just bought a new motherboard for my new Core 2 Duo E8600, it's a MSI P45 NEO3.
This is my first motherboard replacement and I think I've done everything without damaging anything, but the motherboard refuses to power on (the power supply doesn't run and no LEDs are lit on the board, in short, no sign of life). I tried to power on the board ALONE (without the CPU or anything, just the power supply) and it doesn't change anything... Yet if I connect the power supply to my old motherboard, the LED lights up, the hard drive starts, the CD drive too, in short, everything works even without a CPU or GPU.
I deduce that this is purely a motherboard issue :s But how can I locate and fix the error? Do you have any ideas?
I am eagerly waiting for your responses because I paid 90€ for this motherboard!! And I can't even use my C2D :s
My setup:
Old CPU: P4 - 3GHz
New CPU: Core2Duo E8600
Power Supply: Hiper 580W
Case and old motherboard: Dell Dimension 8500 (4 years old...)
GPU: HD 4850 512MB
I just bought a new motherboard for my new Core 2 Duo E8600, it's a MSI P45 NEO3.
This is my first motherboard replacement and I think I've done everything without damaging anything, but the motherboard refuses to power on (the power supply doesn't run and no LEDs are lit on the board, in short, no sign of life). I tried to power on the board ALONE (without the CPU or anything, just the power supply) and it doesn't change anything... Yet if I connect the power supply to my old motherboard, the LED lights up, the hard drive starts, the CD drive too, in short, everything works even without a CPU or GPU.
I deduce that this is purely a motherboard issue :s But how can I locate and fix the error? Do you have any ideas?
I am eagerly waiting for your responses because I paid 90€ for this motherboard!! And I can't even use my C2D :s
My setup:
Old CPU: P4 - 3GHz
New CPU: Core2Duo E8600
Power Supply: Hiper 580W
Case and old motherboard: Dell Dimension 8500 (4 years old...)
GPU: HD 4850 512MB
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Are you sure you have the right power supply because on current motherboards you have several connectors to connect to the motherboard?
In your diagnostics, it seems to me that you're missing a connector. -
Is your ON/OFF connector, or RESET, etc., properly connected to the front face of your case and to your motherboard? It's essential to start the thing. OK, I know, I'm embarrassed, but I messed around with this issue for 15 days.
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Voptis, first of all, thank you for your quick response!
My power supply is very recent (it's not even a month old), so it definitely has enough connectors for a current motherboard, but I only powered it using a single connector! However, there are many female slots on the motherboard, and I really don't see which one to plug in :s
Could you tell me more about it if possible? Thanks a lot. -
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Charenton, yes everything is fine since I can power on my old motherboard without any issues. However, I don't see a switch ON the motherboard... As long as the power supply is turned on and the PC is set to ON, it should work, right?
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Go check this link, apparently you have a 4-pin connector and a 24-pin auxiliary connector to plug in.
I have the impression that you haven't connected your 4-pin connector (12 volts, which is used to power HDD: DVD, fans). -
Désolé, je ne peux pas accéder à des sites web ou à des contenus externes.
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Yes, I have the motherboard documentation.
Moreover, I note that I did not use the "Front panel connector: JFP1, JFP2"
I quote the manual:
"These connectors are provided for electrical connections to the front panel switches and LEDs. It complies with the INTEL front panel input/output connectivity design guide."
Apparently, you can connect "Power LED, Power SWITCH, HDD LED, Reset Switch"
I don't understand anything and, besides, I have no cable from my power supply that could potentially fit into these pins...
However, in the motherboard box, there is a ribbon cable (presumably for a hard drive, but I don't need it), and a mysterious cable that has inputs for the outputs of my power supply PCI (so it has big holes at the front) and at the output, it is a very thin adapter with a slot, but it doesn't seem to fit anywhere on the motherboard :s-
Hi
By the way, I note that I did not use the "Front panel connector: JFP1, JFP2"
I quote the manual:
"These connectors are provided for electrical connection to the front panel switches and LEDs. It complies with the front panel I/O connectivity design guide by INTEL."
Apparently you can connect "Power LED, Power SWITCH, HDD LED, Reset Switch"
Definitely do not connect your power supply there; that's where you need to connect the cables from your case!!!
To connect a power supply to a motherboard, there are only two connectors: one 24-pin and another one with 4 or 8 pins to connect
The rest of the connectors on the motherboard are for USB, firewall, SATA, IDE, etc. In short, for the other components of the PC
However, in the motherboard box, there is a ribbon cable (probably for a hard drive, but I don't need it), and a mysterious cable that connects to the PCI outputs of my power supply (so it has big holes at the front) and at the output it's a very thin adapter with a slot, but it doesn’t seem to fit anywhere on the motherboard :s
The ribbon cable is an IDE ribbon to connect a hard drive or CD drive to the motherboard
The other cable is probably an adapter to connect a floppy disk drive;
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The 4-pin connector is located between the 2 copper tubes (it's a square).
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Voptis, I have indeed connected the 4-pin connector that is approximately in the middle of the motherboard, just like the old one. However, there is no change.
Otherwise, the 24-pin auxiliary connector is properly connected; for me, it was actually the main power and not the auxiliary. -
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You wouldn't have swapped the Reset and Power connectors, would you?
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Normally, it's written on the motherboard next to each socket what it corresponds to. It's certainly written small but it should be there
Once you know what each socket corresponds to, you look at which wire you can connect there
P.S. If you have photos of your connections, feel free to share them. -
https://www.tomshardware.fr/
Is that your motherboard? -
On your tower, your reset and power button are properly connected somewhere.
Try to follow these cables to see where the ends are. -
Yes, that's my CM! But the contacts for the "Reset" button, "Power" button, and "Power" LED are not used, and I don't know how to use them :s
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(sorry for the double post I had a little bug)
I'm going to see if I can find the destination of the wires from the reset button... Dell cases are not very practical... -
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