Question Installed new cpu with and now my screen keeps going black

[inzanezain]

Original specs

Motherboard:X570 Aorus Elite wifi rev 1.0
Ram: G.SKILL Trident Z (Intel XMP) DDR4 RAM 64gb
CPU :Ryzen 5 3600
GPU: Asus dual GeForce RTX 4070 OC 12gb
PSU: Phanteks PH650g 650w PSU

PC was working fine.

I then bought Ryzen 7 5700x

Updated bios F39 version

Installed new cpu. Didn't notice the issue then. But I wanted to get Ryzen 7 5800x3d so couple days later I replaced the CPU again

That's when the noticed all the issues.

My PC will screen will go black and I will hear hardware device disconnecting noise like I unplugged a flashdrive.

My GPU would still have its fan running. Screen won't come back unless I restart the PC. Seems like the PC is still running as I still hear my music playing on Spotify.

It happens when starting the game, sometimes when desktop is loading. Sometimes PC screen doesn't even show up when I start the PC.

I tried everything

I did ddu and uninstalled the driver's for the GPU and reinstalled it. I uninstalled the chipset processors and reinstalled them.

Cleared cmos when trying the both CPUs

Playing with bios with xmp enabled and disabled, I believe was enabled prior to CPU install.
Enabling and disabled 4 decoding
Enabled and disabled bars

I tried both the cpu, Ryzen 7 5700x and Ryzen 7 5800x3d with the rtx 4070 and same issue occurs. My screen will eventually randomly go black.

I plugged in my old GPU, gtx 1040ti and it runs on both CPUs without any issues and no black screen appearing.

I don't know what's going on and what to try anymore.

Besides doing a fresh window install

 

[Lutfij]

PSU: Phanteks PH650g 650w PSU
How old is your PSU?

I plugged in my old GPU, gtx 1040ti and it runs on both CPUs without any issues and no black screen appearing.
I'm assuming you're referring to the GTX1050Ti, if so, then that GPU draws a lot less power then your RTX4070. You might want to source(borrow not buy) a reliably built unit with a little more wattage at your entire PC's disposal.

 

[inzanezain]

PSU: Phanteks PH650g 650w PSU
How old is your PSU?

I plugged in my old GPU, gtx 1040ti and it runs on both CPUs without any issues and no black screen appearing.
I'm assuming you're referring to the GTX1050Ti, if so, then that GPU draws a lot less power then your RTX4070. You might want to source(borrow not buy) a reliably built unit with a little more wattage at your entire PC's disposal.

My PSU is 2 years old.

I've been running the GPU fine for 6 months without any issues. This all happened after I upgraded my CPU

I have wattage metter plugged in to my PC and it doesn't even hit 400wats

My temps on cpu don't go over 70 under load
Gpu stays below 60 under load

 

[CelicaGT]

Did you reset the BIOS to setup defaults? This is recommended any time you install a new CPU. Ensure you write down any custom settings (or take a picture with your phone) before doing so.

Recommended minimum PSU for an RTX 4070 OC is a quality 750W. Your Watt meter cannot measure transient spikes, which is what can cause the issue you see. Additionally your new 5800X3D is a fair bit more power hungry than the 5700X you replaced. It may have pushed it over the edge. As I've said many times before, don't mess with PSU requirements. The consequences can get quite expensive. If you are comfortable with the chance loosing all your data, and replacing most of your system, by all means, continue.

 

[inzanezain]

Did you reset the BIOS to setup defaults? This is recommended any time you install a new CPU. Ensure you write down any custom settings (or take a picture with your phone) before doing so.

Recommended minimum PSU for an RTX 4070 OC is a quality 750W. Your Watt meter cannot measure transient spikes, which is what can cause the issue you see. Additionally your new 5800X3D is a fair bit more power hungry than the 5700X you replaced. It may have pushed it over the edge. As I've said many times before, don't mess with PSU requirements. The consequences can get quite expensive. If you are comfortable with the chance loosing all your data, and replacing most of your system, by all means, continue.

Okay I will see if this fixed the issue. I'll order a new 850w PSU