Thank for reading and will appreciate any help.
I have been reading and searching for the answer for hours.
About a year ago I built my computer..no bells or whistles. Just a simple gigabyte MB with an AMD Athlon cpu.
About six months ago I needed to restart, but it shut off instead. And it wouldn't start back up till ten minutes had passed. If I ever needed to restart after my computer has been on for hours or just a couple minutes, it does not start back for about ten minutes.
Now it doesn't turn on for more than six seconds. it doesn't even get to a screen. I see the fans kick on and I hear the HD spin and engage but another 2-3 seconds and then it just shuts off.
I switched the power supply, same result
I switched the HD, same result
I thought it might be the power on switch but it doesn't make sense
I took it apart and put it back three times now - LOTS of dust in the cpu heatsink.
I have never overclocked either
I'm thinking it just cooked but what? The MB or the CPU or ???? I don't know what to look for and I get 6-7 seconds of on time, not even to sys check or boot really.