Need urgent tech support please! After Case swap PC shows no display signal amongst other issues.

[Milkmadecheese]

I think I’m going insane I will literally pay whoever offers a working solution.

Recently, I purchased a PC off of FB marketplace for a friend, who opted out. It was a great deal, and I didn’t want to abandon the guy I already agreed to meet up with, so I purchased the computer cuz it was a great deal and I thought I could flip it. It came in a rly dusty old metal case, so I bought a nice RGB one for 60 ish dollars with fans off amazon. These 2 days, I performed a case swap on the PC. and btw, before I case swapped, the pc was in fine working condition with no issues.

When pressing the power button, all the fans and lights turn on, including CPU fan, gpu fan, and everything. Even the MOBO light strip was a normal stable orange.
Issues

1. there is no display signal coming from the GPU when I plug it in to a monitor
2. The CPU fan periodically (every 15 seconds or so) ramps up super loud in a consistent pattern
3. The power button is able to turn the PC on, but not off.

I did some experimenting, and some confusing stuff happened.

When you long press the power button to shut the computer down while its running, the MOBO orange strip light starts flashing quickly. Occasionally, long pressing the power button gets the pc to shut down. This is not a power button issue, as I’ve tried with 3 power button from different cases and plugged the power cable into the mobo.

I reseated the ram, and that fixed the power button not working thing for about 3 times, and now it went back to the flashing mobo light.

I have taken out the MOBO battery to reset cmos, no change.

Reseated ram and GPU multiple times, haven’t reseated CPU.

All components were working fine before the case swap, and I dont think and hope nothing is fried or dead.

What should I do? Local repair shops are quoting 100 bucks just to diagnose the thing, and then I would be losing a fortune on buying a PC for the sole purpose of not walking out of a deal on FB marketplace.

Specs:

MOBO: Gigabyte B450 DS3H no-wifi
CPU: AMD Ryzen 5 5600x
GPU: EVGA RTX 2060
Power supply: Corsair 450 watt semi-modular
Ram: bit weird, but came with 2x8gb@3000mhz teamgroup and another 2x8gb@3200mhz teamgroup ram so total 32gb ram.
SSD: 1tb m.2 samsung 980 + another 120 gb sata randomly in there and a 2tb barracuda hard drive

Again, please help, I will compensate whoever finds an answer and manages to help me fix it.

I paid like 435 for the PC+ a 60 dollar case which includes fans, so I would be willing to sell the PC for 425 with the original black cougar case, or 475 with the RGB fans and Gamdias case if anybody wants it.

[Milkmadecheese]

Part list: https://pcpartpicker.com/list/9XnnZJ

[phillpower2]

GPU: EVGA RTX 2060
Power supply: Corsair 450 watt semi-modular

First thing that you need to do is get yourself a PSU that is able to support the GPU, you only have a 450W while the GPU requires a minimum of 500W as is stated by EVGA here

Corsair make some great PSUs but they must only be used for their intended purpose, Corsair advise the below for their CX range so you should be using something from their RM range, see link below;
CX Series™ Modular power supply units are an excellent choice for basic system builds and desktop PC computer upgrades, offering high reliability, low noise, and the flexibility of modular cabling.

Second thing that needs to be done is a barebones set-up outside of the case in case something is shorting out, let us know if you need a guide for doing this.

[Bruce]

@Milkmadecheese - any news?

[Milkmadecheese]

it wont even show display, how woul I backup. Also I don’t really have any files on it, just got it

[phillpower2]

Are you getting help with this somewhere else, being aware that you have no display I for one would not suggest that you backup, if someone has they are not someone that you should be trusting.

[phillpower2]

No response from the OP, closed as having been abandoned.