EZ Debug CPU

[jared_cleveland2000]

Hello all, I've seen this topic posted quite a bit, but haven't seen my exact issue before.

This is an upgrade build going from an old motherboard/cpu/ram standard.

Before I begin let me list my components.

Motherboard - MSI B360-A Pro
CPU - i7 8700k
Heatsink - 212 Evo
RAM - 2x 8GB Ripjaw 2666Hz
Graphics - GTX 980
Power Supply - Corsair HX 750W

So the issue I am having is no display, no IO, and the EZ debug CPU LED is on.

When the computer is first turned on, all of the lights for my IO turn on for a second, then turn off.

I have tried using 1 stick of RAM at a time, using the integrated graphics, double checking power connections.

I took off the heatsink and turned the computer on briefly to check that, and the cpu light turned on briefly, then switched to the DRAM, then switched to VGA where it stayed until I turned it off so the cpu wouldn't overheat.

So my question is, could it possibly be something to do with the heatsink?

Edit: After loosening the heatsink to be basically just resting on the cpu, I tried turning it on. It cycles through the debug LEDs, they turn off, then it does nothing for about 5-10 seconds, then the computer turns off.

 

[Darkbreeze]

Remove the heatsink and CPU. Check the motherboard to make sure you didn't bend any pins. My guess is, you did.

If there are no pins that are bent or look "off" from the rest of the pinbed, make sure the CPU is oriented correctly. Likely, if it is not, there will be bent pins. Possibly there will be even if it is if you did not get the CPU 100% seated correctly. CPU should have locked down with fairly little effort the first time.

If there are no problems there, then I'd double check that you have the CPU cooler plugged into the CPU_FAN header. Some boards will not run if there is no RPM signal on the CPU fan header.

You might want to also look at the backplate assembly. Most coolers come with multiple styles and different mounting hardware accessories. Sometimes it happens that there are similar components that are however different, and the wrong thing gets used. I've seen the wrong backplate, standoffs, and a variety of other things get used. Using the wrong hardware could result in something touching the motherboard, on one side OR the other, where it shouldn't be.

Also, make sure there are no standoffs in the wrong spots where the motherboard mounts to the case and that no loose screws or other small parts might have gotten between the motherboard and case and are shorting something out.

Then check everything, triple check in fact, here:

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

Also, make sure that all installed fans are able to spin freely.

 

[jared_cleveland2000]

Remove the heatsink and CPU. Check the motherboard to make sure you didn't bend any pins. My guess is, you did.

If there are no pins that are bent or look "off" from the rest of the pinbed, make sure the CPU is oriented correctly. Likely, if it is not, there will be bent pins. Possibly there will be even if it is if you did not get the CPU 100% seated correctly. CPU should have locked down with fairly little effort the first time.

If there are no problems there, then I'd double check that you have the CPU cooler plugged into the CPU_FAN header. Some boards will not run if there is no RPM signal on the CPU fan header.

You might want to also look at the backplate assembly. Most coolers come with multiple styles and different mounting hardware accessories. Sometimes it happens that there are similar components that are however different, and the wrong thing gets used. I've seen the wrong backplate, standoffs, and a variety of other things get used. Using the wrong hardware could result in something touching the motherboard, on one side OR the other, where it shouldn't be.

Also, make sure there are no standoffs in the wrong spots where the motherboard mounts to the case and that no loose screws or other small parts might have gotten between the motherboard and case and are shorting something out.

Then check everything, triple check in fact, here:

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

Also, make sure that all installed fans are able to spin freely.

So I switched back to my AIO Water Cooler, and got a message saying Over Current Detected on USB devices. Progress! After removing all USB devices and still getting it, I remembered there was a USB 3.0 slot on my Front Panel that had gotten banged up a long time ago, so I unplugged that set of USB slots from the Motherboard and now it has booted no problem.

If you do get time I do have another question though, my AIO cooler has 2 fans and I can only see 1 CPU fan plug on the Motherboard, I plugged the other one in to a Sys_Fan slot but it is always at 100% speed because of that, is there somewhere I may be missing where there is a second one?

 

[Darkbreeze]

You need to get a fan splitter cable. Both fans should be run off the same fan header OR should be plugged into the fan connector on the pump if the unit is equipped with one. What is the model of your AIO cooler? Are they PWM or 3 pin voltage controlled fans?

Most stuff is PWM four pin these days but there are older units that are not and an oddball here or there.