Got a new Mobo and CPU, now the ah heck won't even turn on and google search hasn't helped. Help please!

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Already tried this:http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems

Current, working computer specs:


CPU: Intel Pentium G630 @ 2.7ghz (duo core)

Motherboard: A Lenovo mobo that says the model and version need to be filled by "OEM", BIOS version DPKT21A, PCI-E, Micro ATX

Memory: 12 gigs (DDR3)

Graphics: NVIDIA Geforce GTX 950

Power: 650 watts


So then I decided to upgrade my CPU, Mobo, and also ended up getting two sticks of DDR4 ram since the new mobo didn't support DDR3...

New Specs:

CPU: Intel i5-6400, LGA1151

Mobo: Gigabyte GA-H170M-D3H, also Micro ATX



Here's the story now... I put the new mobo/cpu in my (current) Lenovo case, then realized that the power switch and panel LED connections were different than the Mobo's. I then borrowed a case from a friend, and the connections matched. I spent a good half hour putting everything together, making sure every connection was firm and absolute. I go to power it on, and nothing... No beeps, no sounds from the internal speaker to indicate any mishap, no anything. I don't hear any clicking or any indication that it's getting power.

So, I put my old system back together and everything works fine again, but I want to use my upgraded parts :(

Something that I should also note is that I'm attempting to reinstall windows 10 through my USB after I get to the BIOS, but as I said above, I can't even get to the BIOS without any power...

However, I haven't done anything to my HDD. Do I need to wipe it fresh before it'll work? Maybe I need to do some sort of set-up or possibly install the new mobo driver on the HDD before doing anything? Is 650 watts not enough power? I'm close to going to a repair store and getting them to set it up but I thought I'd consult with the forums first.

ANY help or ideas would be appreciated, thank you

 
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DarkSable

DarkSable

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You should be able to get to BIOS without doing anything to your hard drive. 650w is plenty of power, so long as it's actually a reliable PSU.

Did you make sure that if the new motherboard requires a 4-pin CPU power and the old motherboard didn't, that you plugged it in?

Did you double check that the power button was plugged into the right pins? Those things can be absolute buggers sometimes.

Did you double check that the RAM has been inserted into the socket and pushed until it clicks? (That one's bitten me before.)
 
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Old motherboard had a 4 pin power, and my power supply is a 8 pin, so I've been splitting it. However, the new mobo is 8 pins, so it matches perfectly now.

every power button/plug I'm certain is plugged in correctly and securely

My Ram is in just fine, but I was reading someplace that maybe trying it with one stick works?

I should also mention I already went through this list: http://www.tomshardware.com/forum/261145-31-perform-steps-posting-post-boot-video-problems
 
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Literally nothing happens! As if I had not even hit the button at all. No fans or anything, and I know the PSU is good because I'm using it currently. Perhaps the panel wires are bad? They don't look old/out of shape though, and my friend said the system in it before worked fine

thank you for your replies! I hope I can resolve this today

 
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DarkSable

DarkSable

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So, this is one of a couple issues, then:

1) The little switch at the back of the power supply is flipped to off.
2) The power button is either plugged into the wrong pegs, plugged in backwards, or is broken.
3) The PSU is dead.
4) The RAM isn't really as far in as you think it is - try reseating it. It takes a surprising amount of force.
5) The PSU isn't plugged into the wall. :p

If your motherboard has a Clear CMOS button, try pressing that. It will flush the BIOS settings and should turn the computer on provided everything is working.

I'll be gone for a few hours, but will come check in after that and see if things are good. :)
 
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I'll go down your list with my experiences

1) I was aware of the switch on the back of the power supply, and I'm certain it was set to on
2)I didn't plug my power button into the wrong pegs, but it is possible I plugged it in backwards so I'll try again
3)The power supply can't be dead, I'm using it right now!
4)I'll double check the ram also, when I purchased the Ram, Mobo, and CPU from a local computer store, an employee assembled everything for me
5)The power supply is plugged into the wall :)

I'll check to see if I have a clear CMOS button too

If these don't work, did I buy a lemon motherboard/cpu? Could I have shorted something out even though I was very careful with my assembly? I tried to be careful when first booting as far as power goes... I plug in the wire to the wall, I hit the PSU switch to on, and then try powering the computer. I don't see how I did anything wrong

 
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Thanks a million for your replies and help DarkSable! I finally found a (lame) solution. For whatever reason, my computer turned on after I unplugged all of the panel connections minus the power switch.. So I don't have front audio, I lost my two USB ports in the front, I don't have the power LED on, BUT my computer starts so I really dont care! I also have more than enough USBs in the back to accommodate my needs. I really have no clue how this worked, or why the other cables were preventing it from starting to begin with. I was still able to finally get to the BIOS and do something, however installing Windows because a huge headache for a couple hours.

I can say now though that I'm currently running on my new case, new CPU, and new Mobo without issue! (knock on wood) Now time to install a bunch of shit.

Thanks again for your attention DarkStable, even though your advice wasn't the solution I was very happy to see someone took the time to try and help. THANK YOU MAN!

 
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DarkSable

DarkSable

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Hey, I'm so sorry, I ended up going out of town unexpectedly. I'm SO glad that you found a solution for this, at least temporarily.

Check the front panel wires themselves, and double check that they were plugged in the right way - it sounds like something was shorting out, which isn't terribly good.

EDIT: ...that being said, motherboards are seriously the most temperamental things in the world - five identical motherboards are almost guaranteed to have five completely separate problems, none of which will make any sense whatsoever.
 
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