Question Replaced power supply, PC still not booting

[guyrelax]

Hi
I woke up one day to my PC doing nothing when I pressed the power button. I knew it was the PS or the motherboard. I wasn't sure how it happened but one odd the thing the pc was doing... whenever I put the computer to sleep I'd come home to it being back on again. I figured it was a software thing but perhaps was related to the power supply.

So I bought a power supply and swapped it out, replacing all the same plugs. So now it does turn on when I press power, however I get nothing on the screen. I checked all my connections and they are the same as the old setup. What could be causing the issue?

 

[rgd1101]

full system spec? include make and model of the psu

 

[guyrelax]

AMD A10-5800K Trinity Quad-Core 3.8GHz (4.2GHz Tur

HyperX Fury Series 8GB 240-Pin DDR3 SDRAM DDR3 160

ADATA Premier Pro SP600 ASP600S3-128GM-C 2.5" 128G

Western Digital WD Blue WD10EZEX 1TB 7200 RPM 64MB - OEM

MSI A55M-E33 FM2+ / FM2 AMD A55 (Hudson D2) HDMI M

Put in a new gpu about a year ago, an MSI geforce, I believe its the 1050ti but no way for me to tell right now

Old Power supply - Rosewill Stallion Series RD400-2-SB 400W ATX 12V
New power supply - EVGA 500 watt 50 plus atx 100-W1-0500-KR