P55-CD53 Won't Boot Without CPU

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cpljwlusmc

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I know this is probably a dumb question, but I just got all my parts in except my GPU and CPU. I plugged everything in and bumped the power button on the motherboard while hiding some cables. It started up, a few lights came on, and it instantly shut down. It went into a loop of flashing on and off every 3 seconds until I shut the power supply off manually (switch in the back). Did I mess anything up? More importantly, did I find out that my board is faulty? Or is it just doing this because the CPU isn't installed?

Currently, I have:

RAIDMAX RX-630SS PSU
P-55 CD43 MSI motherboard
GEIL DDR3 1066 2GB (x2) RAM

What just happened?

Joe
 
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Can't boot without CPU.

Hands off until the CPU and heatsink are properly installed!

Also be careful with that Geil RAM if you plan to overclock.
 
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No plans on overclocking. I'll be getting a Core i5-760, and I'm happy with it at stock.

The wierd thing is, it didn't even try to POST, didn't give me any beeps like a CPU failure or anything, just a second of light, then nothing.
 
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How do you expect a computer to work without a CPU? :bonk: :think:

Can a human being function without a brain? :laugh:
 
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The wierd thing is, it didn't even try to POST
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You don't know that.  There are almost 50(!) Bootblock Routine and P.O.S.T. Checkpoints before there is even video output.  Early CPU initialization occurs at the second and third Bootblock Routine Checkpoint. There would still be a little less than 50 more initialization checkpoints after that which will simply not take place when there is no processor.


 
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should build a system in a sensible order like mobo > cpu/heatsink > ram > connect cables to mobo

And always keep the psu without power supply until you are ready to boot up because you could of been touching the board as you switch it on and short circult something.
 
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Just to clarify, I wasn't trying to boot my computer without a CPU. That makes no sense :nono:. I was concerned as to any damage as to what may have happened (if any) by accidentally starting up my motherboard. As I stated before, I hit the motherboard's power button accidentally while moving around some extra cables (i don't have a fully modular PSU). Also, I have heard a couple incidences where the MSI P55-CD53 will not start up at all, and will light up for a second and then shut down. I was concerned because I thought I may be having the same problem. But that will be determined as soon as I get my Core i5-760 in it. But my main concern was if I had inflicted any damage to my motherboard in any way. It's not something I've ever done before (I'm usually more careful than this lol), so I wasn't sure. I'm not COMPLETELY dumb, lol  :-P)
 
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I hit the motherboard's power button accidentally while moving around some extra cables
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The main point is, PSU being powered up at all was not a wise thing to do, especially when moving power cables around & the system incomplete. No way to know about board damage until the CPU is in & the system is ready for it's first 'official' power up. As a reminder, it is recommended for initial startup, only one RAM stick is installed in the black primary dimm slot.

Added: You might check the mainboards BIOS version sticker (located on the BIOS chip) for the version installed. Your CPU, Lynnfield i5 760 SLBRP in the CPU Support List shows version 1.8 being required for full support.
 
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cpljwlusmc said:
Just to clarify, I wasn't trying to boot my computer without a CPU. That makes no sense :nono:. I was concerned as to any damage as to what may have happened (if any) by accidentally starting up my motherboard. As I stated before, I hit the motherboard's power button accidentally while moving around some extra cables (i don't have a fully modular PSU). Also, I have heard a couple incidences where the MSI P55-CD53 will not start up at all, and will light up for a second and then shut down. I was concerned because I thought I may be having the same problem. But that will be determined as soon as I get my Core i5-760 in it. But my main concern was if I had inflicted any damage to my motherboard in any way. It's not something I've ever done before (I'm usually more careful than this lol), so I wasn't sure. I'm not COMPLETELY dumb, lol  :-P)
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Refrain from even taking the side panel off whilst it's powered.  Some static from you and you could damage something.  It's not worth the risk.

May I ask why the power cable was even plugged in, never mind turned on?

Board > CPU & memory > install board in case > graphics card, ODD, storage devices & others > install PSU and connect cables.

Do not let your impatience get the best of you. ;)
 
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