Have you tried any other PSU? How old is the Zen? iirc, it was released 4~5 years ago. Capacitors do age over time, especially at high temps as you'd find in a fanless PSU -- they generally don't last as long as fan cooled ones. The PSU may not be able to power the components -- even though the ove...

Hi all! I have a simple question about this problem. Does it mean that the PSU can't start at all or that the system can't boot? I recently started to have problems with the following rig: Fortron Zen 300W Gigabyte 780G MBO Athlon 64 X2 5000+ 2x 1GB RAM Sapphire HD4670 Ultimate WD 6400 AAVS DVD-RAM ...