I have reset the BIOS via the jumper cables and replaced the CMOS battery.
So far I am having no issues but this problem is intermittent. Sometimes it boots, sometimes it doesn't.
I will have to wait for the whole week and see if this issue recurs.
I should note that when I power the PC on, fans go on, no screen, the mobo CPU light flashes red. Could my CPU be dying?
I have no had a single PC crash in Windows once the computer is booted up mind you. The system works very well with no instability issues noted.