i've just returned from a one month overseas trip. After that, my computer has problem starting up.
when i press the startup button, the machine will 'crank up' and die down. then i keep trying, and the same thing happens. The more i try, the 'crank up' time seems to get longer. So, i take out all the 'un-nessary usb ports' and try again.
And after bout 5-10minutes of trying, then my computer started to startup.
the problem has persist now everytime when i startup the computer
the system jus turn on, less than 1 sec it'll shut down. sometimes, takes more than 1sec shutdown. no image on the screen. not load to the BIOS.
but after a few tries, it manage to load.
so, it's either lightup and shutoff or load all the way. it never hangs in between the process.
That issue is almost certainly one of 2 things, Power supply or motherboard. Between replacing the 2 of those I'd say you have a good 90% chance of fixing the issue. Try the power supply 1st, it will be a bit cheaper and easier to replace.