[SOLVED] Upgraded Parts - PC Not Turning On

[Jonjonth]

Hi there - longtime lurker infrequent poster!

I have recently managed to get my hands on a few new parts to upgrade my build, I have put these into my machine but now I'm running into quite an odd error. When the GPU is plugged in with PCI-E chords the PC does not turn on at all, when I take these wires out the PC turns on and a light even comes on the GPU (the Zotac logo). It is worth mentioning that this GPU requires 2 8-pin cords and I am using one 6+2 and a 4+4 (with a splitter).

Could of other quirks that might help:

• Sometimes when switching on the power at the back of the case there is a small spark at the top of the motherboard (probably not a good thing...)
• There is a red cpu light on my mobo suggesting there is a problem with this.
• My PSU is kind of old, bronze rated and 520w (below Nvidia's recommendation) - I am 80% sure this is probably the issue but wanted to check before shelling out for a new one.
• I've removed the CMOS battery and replaced it
• I also put the old GPU back in and it booted - however, the screen didn't turn on...

new Parts in question:

• Zotac RTX 3070 Twin Edge
• AMD Radeon 5600x
• Gigabyte B550 Aorus Pro
• G.Skill Ripjaw 16GB DDR4 Ram Kit

Any suggestions or solutions would be greatly appreciated. Let me know any additional troubleshooting steps

I also have a local PC repair shop that I'm considering taking it along to, however, ft its most likely the PSU or something I haven't thought of I'll have a go at replacing this first.

 

[tecmo34]

It is worth mentioning that this GPU requires 2 8-pin cords and I am using one 6+2 and a 4+4 (with a splitter).

This is your issue!!! There is no 4+4 plug for a GPU, that is for the motherboard. You need to use only a 6+2 cables so you will probably need to upgrade your PSU, ASAP and hope that using that cord didn't impact the GPU when running it.

 

[Fiorezy]

First at all upgrade your PSU immediately to at least 650W, get one from a reliable brand and don't spend little on it as you are running high end parts.

The issue that you are having is caused by 3 reasons:

• Your PSU is very weak for a 3070 and I'm pretty sure that it doesn't have the right cables for the GPU.
• The 4+4 cable is for the CPU.
• You will need to update the BIOS to run that 5600x.

 

[Jonjonth]

Thank you for your responses.

I will upgrade the PSU immediately. Will let you know how it goes!

Jonathan

 

[Jonjonth]

First at all upgrade your PSU immediately to at least 650W, get one from a reliable brand and don't spend little on it as you are running high end parts.

The issue that you are having is caused by 3 reasons:

• Your PSU is very weak for a 3070 and I'm pretty sure that it doesn't have the right cables for the GPU.
• The 4+4 cable is for the CPU.
• You will need to update the BIOS to run that 5600x.

Thank you, I replaced the PSU with a Corsair RM750x and Q-flashed the mobo and we're up and running!

The system is very loud under stress, so will start troubleshooting if there is any way to fix.