The PSU is ELP 500 SMoBo isn't the issue. What is the issue, is PSU. Since you'd be going from 75W GPU to 160W GPU.
Speaking of PSU; make and model (or part number) is? Also, how old the PSU is and was it bought new or used/refurbished?
The PSU is ELP 500 S
Yeah, low quality PSU and borderline terrible. I wouldn't use it even in office PC. Perhaps only as paperweight or doorstop.The PSU is ELP 500 S