1st PC build gone wrong

mattdaddy66 · Jan 4, 2016

I finished the build, turned it on and there was no POST, there was no power to my mouse (usb) and my keyboard (PS/2 plug? also doesn't work now).However, all my fans are running, the power light on the case was on, and the gpu and its fans were on. is it my mobo?

Barty1884 · Jan 4, 2016

Quite a few things to check out first.

Did you put it all together outside the case? Motherboard, CPU/HSF, 1xRAM and PSU connectors? Did it post then?

Do you have a GPU? Try without that, use your onboard (if you have it).

It could be your motherboard, could be your PSU, could be something wired incorrectly. In short, it's too early to tell exactly.

Outlander_04 · Jan 4, 2016

At the beginning of the forum is a thread about how to troubleshoot

Most common first time mistake : there are TWO power leads to the motherboard . Are they both plugged in ?

jmsellars1 · Jan 4, 2016

Yeah it sounds like your motherboard isn't getting enough power, as Outlander_04 said first thing I'd check is that you have the 20+4 pin AND the 4+4 pin power connectors plugged in.

Too early to say for sure what the problem is but most likely something to do with the motherboard and/or PSU.

mattdaddy66 · Jan 4, 2016

jmsellars1 :

I did not put it together outside the case. However i do have all the connectors in (just checked 4+4 are in, and the 20+4 is in. The PSU is an EVGA 600B. GPU is MSI GTX 950. Mobo -MSI 970 Gaming am3+. CPU -AMD FX 8320. I dont think case matters but it is a Corsair spec 02

mattdaddy66 · Jan 4, 2016

Outlander_04 :

both are plugged in

jmsellars1 · Jan 4, 2016

I'd take them out and put them in again to make sure they're plugged in fully.

If that doesn't work then I'd try resetting your CMOS in case a bad BIOS setting is causing the issue. I'd also make sure the CMOS battery is in properly. It is on your motherboard and looks like a watch battery.

mattdaddy66 · Jan 4, 2016

Barty1884 :

It has not posted at all. It does not have an onboard (pretty sure it doesn't, specs are in another reply). I also think it might have killed my keyboard since it was working until i tried it with the new pc

BrandX · Jan 4, 2016

Take a photo of your motherboard and upload it (you might need to use a desk lamp to get enough light), that way someone can check that the cables are correctly connected. I expect they are, but it can't hurt to check.

mattdaddy66 · Jan 4, 2016

jmsellars1 :

OK. it'll be a minute. I have to take out my gpu because it is on a slot that is apparently covering the battery. Maybe (hopefully?) it got nudged while installing the gpu.

mattdaddy66 · Jan 4, 2016

BrandX :

I'll post a photo after i plug them back in

mattdaddy66 · Jan 4, 2016

jmsellars1 :

Still not working. here are the pics with gpu, without gpu http://imgur.com/a/u7uuW/all

jmsellars1 · Jan 5, 2016

Sounds like a possible faulty motherboard or PSU.

- Just to rule out the RAM though, I'd try taking the RAM out and putting it back in again to see if that works. If it does I would try one stick on its own in each slot on the motherboard and try that again with your other stick of RAM assuming you have two.

- Then I would try to rule out the PSU, do the other things plugged into the PSU such as optical drives and hard drives power up?
- If they do it suggests the problem is on the 12v rail of the PSU or the motherboard. What is the model of your PSU? If it is a cheap PSU I'd say that's more likely to be the culprit, if it is a quality one it is probably more likely the motherboard.

Outlander_04 · Jan 5, 2016

Some MSI boards have used a non standard RAM layout, but I think that was over a few years ago .

Try the RAM in the slot nearest the processor and in the third slot

mattdaddy66 · Jan 5, 2016

jmsellars1 :

its an evga 600 B1. costed $40 on amazon for a sale original price is like 60 or 70. tried switching ram and ram slots. didnt work

mattdaddy66 · Jan 5, 2016

Outlander_04 :

done. still doesnt work

MDXX · Jan 5, 2016

Outlander_04 :

I know my msi motherboard uses the 2nd and 4th slots for DC

Outlander_04 · Jan 5, 2016

MDXX :

They should be paired 1 and 3 , 2 and 4
It would be possible to use either pair , but on an AMD chipset board you would expect 1 and 3 to be the first link to the memory controller

Telekino · Jan 5, 2016

I built a PC in 2009 and had a similar problem. I bought a new monitor that arrived before my PC parts did. I plugged the monitor into my old PC because I wanted to check it out, and was using the new monitor until the other parts arrived.

I built the PC and everything seemed fine. Fans were running and everything. But nothing would display on the new monitor. I finally plugged in my old monior and everything was fine. I loaded Windows and everything. I plugged my new monitor in and there was no image.

Finally, I put my new monitor aside, unplugged, for a couple days. When I plugged my new monitor in now, it worked no problem.

I was never able to find any explanation to this. All I can think of is that plugging the computer into a really old PC with a different connector somehow configured the monitor to work with that connector. Leaving it unplugged must have reset the monitor to factory condidtion.

I don't know if this is your problem. But before doing a ton of work, try using a different monitor, and try using different type of connections (displayport, HDMI, vga).

If this doesn't work take out your graphics card and plug directly into the motherboard. Read the instructions for the graphics card installation. Maybe you need to install drivers first for it to work. To do this you will need to plug into your motherboard and install Windows (or whatever you are using), then install the software for the graphics card, then physically install the graphics card. It's also possible that the graphics card needs to be physically installed before the software, but even if this is the case you will still need to plug the monitor into the motherboard and install the operating system, then the graphics card software. You have to read the graphics card instructions for the proper installation procedure.

mattdaddy66 · Jan 8, 2016

Thanks everyone. Apparently the RAM wasn't in correctly after all. I wasn't putting enough force into it (thought it would be fragile). Thanks everyone

jmsellars1 · Jan 10, 2016

Glad to help

For future reference though, RAM is probably the most durable part of the PC. I've heard of people throwing RAM across the room and putting it through the washing machine etc. and it still works.

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