Cant figure out the culprit

[philly_87]

Ok so recently i bought a new computer its a gigabyte 870a-ud3 with gskill 1600 memory 9-9-9-24-2t a gtx asus gtx 470 and a ultra lsp 650 w power supply now if i try to overclock my volts on my processor to 1.5 computer restarts, temps are fine it restarts like 20 sec into the prime or intel test burn, if i try to push my video card to 1.087 volts and run fumark computer goes black screen restart, and fan on gtx 470 stays at full boar untill i do a hard power cycle, i recently bought a corsair hx850w cause i thought the power supply was the culprit but its still happaning, can some oen help me determine what the culprit is so i can rma it within the allowed time please and ty would be greatly appreciated

 

[philly_87]

Oh and i have also turned off the option in windows for it to not restart, but it does anyways, i have the mosfet under a aftermarket heatsink, and a h50 on the cpu it never goes above 38c

 

[cporro]

i've been wondering what the deal is with "supported" ram. that board doesn't support ddr3-1600 according to what i've seen. could that be an issue?

 

[jsc]

Oh and i have also turned off the option in windows for it to not restart, but it does anyways, ...

That just means that the restart is not caused by Windows, but by a hardware problem, probably power related.

First, restore all motherboard settings to factory default by clearing the BIOS.

Work through our standard checklist and troubleshooting thread:
http://www.tomshardware.com/forum/261145-31-read-posting-boot-problems
I mean work through, not just read over it. We spent a lot of time on this. It should find most of the problems.

If not, continue.

I have tested the following beeps patterns on Gigabyte, eVGA, and ECS motherboards. Other BIOS' may be different.

Breadboard - that will help isolate any kind of case problem you might have.
http://www.tomshardware.com/forum/262730-31-breadboarding

Breadboard with just motherboard, CPU & HSF, case speaker, and PSU. You do have a case speaker installed, right? If not, you really, really need one. If your case or motherboard didn't come with a system speaker, you can buy one here:
http://www.cwc-group.com/casp.html

You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU.

Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.

If no beeps:
At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.

The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.

You can turn on the PSU by completely disconnecting the PSU and using a paperclip or jumper wire to short the green wire to one of the neighboring black wires.
http://www.youtube.com/watch?v=5FWXgQSokF4&feature=youtube_gdata

This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.

If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card. Silence or long single beeps indicate a problem with the memory.

Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST.

Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.