mostkedi

So I decided to upgrade my gtx 745 to Rx 570. Unfortunately I don’t have 8pin connector from PSU so I decided to remove 15 pin sata from CD drive and use it with an converter. I was doing it with a friend, the converter needed a 2 15pin sata connector to power 1 8-pin GPU connector. My friend removed the sata power from the hard drive and tried to run it like that (I know he doesn’t know a thing). After that, I reconnected HDD but pc doesn’t post at all. There is a weird buzzing sound comes out of motherboard. Idk what is wrong. I have i-4770, 12gb of ddr3 ram, and plenty juice for GPU from PSU(about 500w). It makes the same noise with my gtx 745, intel onboard graphics as well. 
A week later...
 
 
I got a new PSU from thermaltake 600 watt with 8-pin connector, hooked it up. Works perfectly with gtx 745. 
More on my pc specs, motherboard is IPMB7-MP.
Anyway, there is no beeping noise anymore btw (yet). I installed Rx570 and it does not post anything on the screen, it is just black. I have disabled INTEL on board graphics and Nvidia drivers didn't work. in bios, I disabled PCI SERR# Generation and reboot. Then I tried enabling PCI VGA Palette Snooping, no luck again. I have reset the CMOS by removing the battery. But now there is a beeping noise coming from my motherboard and I don't know what should I do at this point. Please help. Rx570 still doesn't post. I am so frustrated from this process. I have no clue why PCIEX16 3.0 lane would not recognize rx570 and works fine with gtx 745. 

And this, dear reader, is why we don't use cheap adapters with ultra low quality power supplies. 
 
Try a different power supply or motherboard. Something got toasted

one SATA connector used when 2 was needed, and on an RX 580 no less, which utilizes the entire 150 watts an 8 pin affords. SATA and molex, commonly used to adapt to PCIe on super cheap systems, simply cannot handle the current.
 
Sounds a lot like a dead PSU, rip in pasta. In the future, mind the connectors. If your PSU lacks the connectors needed to run your hardware, it's not up to the task, and no amount of adapters will change that.

I would agree with 5x5 the PSU.  But imo more so that then the mobo.  just my 2 cents and what not.