Computer won't turn on

[spittonjr]

I've just completed my first pc build, but it won't turn on. I've replaced the psu to a corsair tx550m and I now have my mobo (aorus z370 gaming 5) flashing all the leds when I turn on the psu switch, but nothing happens when I hit the power button on the tower and there is no beeping from the mobo speaker. The rest of the build is:
Gigabyte gtx 1050
Ripjwas V DDR4 2400
Wd blue ssd
Seagate hdd
Intel i5 1151
Any suggestions?

 

[stdragon]

Starting on Page 51 of your manual, there's a list of debug LED codes. Do you see any such codes being reported?

http://download.gigabyte.us/FileList/Manual/mb_manual_z370-aorus-gaming-5_1002_e.pdf

 

[spittonjr]

Unfortunately there isn't even any power going through after the initial flash to report an error code. I've also tried taking out a ram stick and trying each slot individually with just one stick of ram and then repeating with the second stick

 

[stdragon]

And just to confirm, you do have both power connectors connected to the motherboard? Something ain't right if you already replaced the PSU. By chance, is it connected to a UPS battery backup unit? If so, just connect the main AC plug directly into a wall outlet.

 

[stdragon]

Once last thing - When you installed your motherboard to the case, are you sure all the standoffs nuts are bolted to the case where they're supposed to be? I've seen it once where an extra standoff was installed, but not in use because there was not hole in the MB above it. As you can imagine, this caused an internal short where the metal standoff nut bridged a few traces on the bottom of the motherboard.

 

[spittonjr]

I've double checked that both mobo connections are in place and secured. I don't have a ups unit. I've just been plugging it directly into the wall. I've also checked the outlets to confirm that they have 110v. Would the mobo be bad since not even the cpu fan starts?

 

[stdragon]

If you're confident that all the standoffs are where they're supposed to be, and not an extra install not being used.... yeah, it's possible you might have a bad Motherboard.

If I were you, I'd call Gigabyte technical support over the phone. I mean, if you're not even getting a diagnostic code, that's either a power issue, an internal short, or something surface mount that's bad.

If you haven't already done so, go ahead and clear the CMOS settings too, then try again.

 

[spittonjr]

I made sure that the stand offs were installed in the right spots, but I noticed one was stripped both on the tower and internally when I went to place the screw in. Would that possibly cause a short? If so could I remove that one standoff and go without? If not, I'll try calling Gigabyte.

 

[stdragon]

I made sure that the stand offs were installed in the right spots, but I noticed one was stripped both on the tower and internally when I went to place the screw in. Would that possibly cause a short? If so could I remove that one standoff and go without? If not, I'll try calling Gigabyte.

Nah, that wouldn't cause a short. Just annoying that the standoff won't hold in pace to the case. But, that MB has like what, 9 screws holding it to 9 standoffs? Ok, o 8 out of 9 holding in place ain't bad 😀

Where you would be in trouble is if a standoff was installed in a location where it's touching the backside of the MB, but not behind the screw hole. In that situation, it could very well cause a short.

 

[spittonjr]

Great to know! I'll post what I find out. Thanks for the help!

 

[spittonjr]

So the problem was a bad consolidation housing for the f panel and it wasn't allowing a solid connection. By ditching the housing and doing it manually I was able to get it up and running. Thanks for helping me eliminate the other stuff! I wouldn't have gotten to that point without help.