I had my PC on sleep mode overnight. Usually if u press anything on the keyboard the PC would turn back on. So today I was doing the usual...but the PC power button was blinking. I tried doing a hard reset but didn't work. Then I unplugged and plugged the power supply cable back in. Now I notice PC won't power on. Power button won't light up, once the power is pressed on....the PSU fan would spin for 1/2 second then stop. I was wondering if this is a PSU replacement time or there can be a way to troubleshoot it. If I have to replace the PSU, may I get some recommendations. Thanks alot.