help Assessment issue

[Kindergarten King]

So I leave my computer on sleep like most people, I "Wake up" the computer and see no output. The fans on the graphic card have stopped but the computer seems to be working normally. I plug in the GPU (RX 580) to a different PCI lane and the fans begin to spin however no output after 3 restarts. The CPU inbuilt graphics gives an output however it could be a PCU powering issue, a motherboard powering issue or the GPU has stopped working but I have no way to test this. Is there any companies who offer refunds on the parts if you use them and it doesn't fix the problem. My first port of call would be to buy a new graphics card however I don't normally buy new because of the price increase. I don't have any spare parts since I sold my last rig. The 580 was second hand and used in a mining rig, however I've experienced no overheating issues. The motherboard is a gigabyte Z97M DS3H CPU 4690K overclocked 4.0GHz PSU 650W Corsair bronze. I used to have a R9 280X with higher power draw however didn't have any power draw problems with that card.

[Radium_Angel]

13 minutes ago, Kindergarten King said:

sleep like most people

So don't put it to sleep, just turn off your monitor.

See what happens

[BlueChinchillaEatingDorito]

Why don't you just shut down your computer...with SSDs, Windows doesn't take long to boot up. You'll be saving the amount of power that's being wasted leaving your computer in sleep mode and reduces wear and tear on your components.