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Upgrade to i7 4770k and msi G45 not booting! Please help!!

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November 3, 2013 6:59:08 PM

Quick background. I've been building computers for awhile and I just recently purchased a new LGA 1150 gaming mobo and an i7 4770k as upgrades. I installed them but my computer wouldn't boot. Fans would turn on but nothing connected to the mobo had power (keyboard, mouse) and the bios didn't load. Another weird thing was I could turn it on with the power switch but it wouldn't turn it off. I had to clear cmos to get it to turn off. I sent the mobo back to get another and i put back by old hardware and yet the same thing is happening! Fans are turning but nothing will boot! This mobo doesn't have a clear cmos so I I have to flip the switch on the psu to turn it off. (psu is a corsair 750 with no voltage switch that I can see) I would greatly appreciate any help!!
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November 4, 2013 1:03:17 AM

did you check the voltages on the 20/24-pin cable with a voltmeter? or maybe to have the old mobo to test with.
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November 4, 2013 6:21:11 AM

Anas Bashar said:
did you check the voltages on the 20/24-pin cable with a voltmeter? or maybe to have the old mobo to test with.


I'm using the old mobo now. I literally used my computer the day I upgraded and now I'm using the exact same setup and it's not working.
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November 4, 2013 7:50:02 AM

1- sorry, i couldn't understand your last reply, so now you are using your old build and it is working or not?
2- post the old and new builds/components here, with as much details as you can.
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November 4, 2013 9:02:53 AM

Anas Bashar said:
1- sorry, i couldn't understand your last reply, so now you are using your old build and it is working or not?
2- post the old and new builds/components here, with as much details as you can.


My old build was a mobo which a can't remember the exact model with an AMD 555 BE as cpu. Those are the only two parts I switched out. I upgraded to a MSI Z87-G45 mobo and an i7 4770k. I had problems so i sent the mobo back and now I'm trying to run my old build exactly as it was before with my old mobo and my 555. Except I'm still having the same problems. Just to clarify my old hardware (the hardware I'm trying to run now) was working perfectly fine a week ago before I tried to upgrade.
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November 4, 2013 9:52:36 AM

your PSU is corsair 750, what is the exact mane? so that i can know on what standard it was built.
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November 4, 2013 10:09:38 AM

Anas Bashar said:
your PSU is corsair 750, what is the exact mane? so that i can know on what standard it was built.

CORSAIR HX Series HX750 750W 80 Plus Gold
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November 4, 2013 10:25:12 AM

do you have a voltmeter? if you are qualified enough to use it, power on the PSU, and measure the voltages on the pins of the 20/24-pin cable (that goes to the Mobo), also check that connector for traces of oxidization.
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November 4, 2013 11:03:01 AM

Can you please tell us what the motherboard is....? BTW anas, we meet again :)  I bought my PC parts. Ill PM you the specs


So tell us what your mobo is please
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November 4, 2013 12:59:44 PM

Anas Bashar said:
do you have a voltmeter? if you are qualified enough to use it, power on the PSU, and measure the voltages on the pins of the 20/24-pin cable (that goes to the Mobo), also check that connector for traces of oxidization.


I checked the cable and it still looks good. I don't have one right now but I go to a university that has a pretty large computer science department. I'm sure I could find one there, it probably would come with it's own electrical engineer. I just don't understand how it could work perfectly fine forever and without warning be dead. The PSU that is.
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Best solution

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November 4, 2013 1:14:25 PM

thatdepauwkid said:
Anas Bashar said:
do you have a voltmeter? if you are qualified enough to use it, power on the PSU, and measure the voltages on the pins of the 20/24-pin cable (that goes to the Mobo), also check that connector for traces of oxidization.


I checked the cable and it still looks good. I don't have one right now but I go to a university that has a pretty large computer science department. I'm sure I could find one there, it probably would come with it's own electrical engineer. I just don't understand how it could work perfectly fine forever and without warning be dead. The PSU that is.


not necessarily the PSU itself, the cable or the connector might have been damaged when you removed them, these things happen.
try to test the PSU somehow, check if the voltages are ok. it would be really helpful if you could borrow another PSU from a friend to test with it.
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