After shutdown, computer takes many attempts to start again
Desktop has run like a dream for quite a few years then all of a sudden, after being shut down, on restart, it goes into an endless loop of on off, on off, restarting continually after about 0.5 of a second. I turn power off, and back on, try again, same thing, unplug, reset, nothing seems to fix it until it randomly starts on the 20th or 30th attempt.
I think it must be motherboard, but could be power, or memory or even MPU, anyone else experienced this? Any good fixes? ( i read one person say memory is failing, another the power supply capacitors, but its so consistent, it does not feel like those.)
ASUS maximus hero VII,
VengPro DDR3 8GB 2133
850W EVGA GOLD-2 PSU
Intel Core i7 4790K s1150
4GB MSI GTX970 GAMING PCI-E