Tony Hwang wrote:

Is your PC PSU proper size? I use 500W one on my PC. My server has
750W one. Wonder if it is undersized El Cheapo? If you have voltage
problem, other appliances will have trouble too.

Both of those are way overkill for most machines. I've got a good
quality 330W in one machine, a 220W in the other. Both have been fine
for many years.

You only need a huge power supply if you are driving a high-end graphics
card or many hard drives.

Chris