System will not turn on. Opinions appreciated.

[realsbd]

All,

Thanks for your help.

My situation is that my original system died when powering down it tripped my home fuse and half my room went dark. When I restored power, I found that my PC would not turn on. Since it was electrical in nature, I began with buying a new PSU (Corsair RM 850x). Sure enough, it was clear that the old psu (700W OCZ) was fried.

Upon installation of the new PSU, I would only get a flicker of life from the system when I tried to turn it on (the lights would flash on, CPU fan would start spinning and suddenly turn off). I used my PSU tester and found that the new PSU was providing correct voltage. From there I assumed other components may be fried. Before replacing the motherboard, I replaced the cr2032 battery on the old mobo... no luck.

I bought a new Asus Prime Z370-A LGA1151... motherboard with a new i7-8700K (the prior motherboard and CPU were approaching 8 years old any way). I dropped in some new DDR4 memory (G.Skill DDR4 3200 MHz Trident Z - 2x8GB) as well (the old system had DDR3 RAM). I put all of this into a new case as well.

The only items remaining from the old system are the GPU (Zotac GTX 970), an SSD, and 2 HDDs.

When it comes time to power on, it does the "flicker to life for a moment" thing still! The LEDs on the mobo light up, the fan spins for a moment and then nothing!

Any thoughts or suggestions are appreciated. I'm sure we've all been in this place of ridiculous frustration.

 

[drivinfast247]

Make sure ALL power cables are correctly plugged in to motherboard. Also, remove GPU and plug monitor into motherboard. See if it boots.

 

[realsbd]

Thanks for your response!

I checked the mobo. Power to modo is secure, power to CPU is secure, power to CPU cooler is secure.

I removed the GPU (the only card installed on the mobo), connected the monitor to the DVI coming out of the mobo...
still no luck. It's still doing the quick flicker and then nothing.

Any other thoughts?

Make sure ALL power cables are correctly plugged in to motherboard. Also, remove GPU and plug monitor into motherboard. See if it boots.

 

[drivinfast247]

You're getting nothing on the display? Do you have the ram in the correct slots? Check the manual for correct locations.

 

[realsbd]

The system dies within a second of turning on. The fan spins for just a moment. So, there is no chance for the display to show anything.

I did place the RAM in the prescribed positions (from the manual). I did not try doing 1 stick at a time though. I'll try that next. However, this is brand new out of the box RAM, so it should be ok.

You're getting nothing on the display? Do you have the ram in the correct slots? Check the manual for correct locations.

 

[drivinfast247]

I'm not really sure. Make sure CPU is properly seated to socket.

 

[realsbd]

No dice... I reduced it to one stick of RAM. I have reduced the system to the simplest config as possible: the new PSU, SSD, CPU, and mobo in the case. The case, PSU, CPU, and mobo are all new.

The system just flickers on for a brief split second, just enough to get the CPU fan to spin with an audible click from somewhere, then nothing. Power continue to flow since the mobo LEDs remain on. Otherwise, nothing is happening. Monitor never even gets a chance to display anything.

Any thoughts, anyone? I would be truly grateful for further assistance.

 

[sadoeng]

Uncouple the whole components and recouple it back. Do it slowly and take note of each step. Probably something is missing or one of the components is working right.

 

[Dromoxen]

I had similar and couldnt work it out , tried everything as stated, then did the uncoupling andf re-assembly ..... hurrah it worked . Make sure your cpu fan is connected correctly and the pesky power-on , reset and HDD are good. Try powering on your bare system outside the case in case its a short (which would cause immediate shutdown). get a friend to look over yor work. Two heads are always better than one. Altho try telling that to "two-head joe" , wanted to work for NASA and could only get a job in a Fair, sad, really.. he could be an Alien Ambassador instead?