hi scleros yes the spins for about a second then powers down thanks
The usual reasons for this behavior with ATX type power supplies are:
Once turned on by motherboard via power switch, power supply does not assert PWR_OK typically due to faulty supply. Since power supply is new this probably isn't the case.
Motherboard not properly grounding PS_ON# to turn power supply on, and then keep it on, or is detecting a problem and switching PS_ON# back high. So, either a faulty motherboard or a problem component. At this point I usually disconnect everything from the board except for processor and minimum RAM and try to determine if it is board or another component. But, before doing that, try reseating (remove and reinstall) the memory modules and discrete video adapter card, if any.
I would look at the thermal paste between CPU and CPU fan. It may have become dry. You mentioned that the fan spins for a few seconds then stops. Motherboards have failsafe mechanisms that stop a CPU from melting a motherboard when their average temperature spikes too quickly. The board switches itself off. Head to your local computer repairs company and they're bound to have some thermal paste for you.
For no apparent reason the cd tray on my Mac G4 (about 3 years old) suddendly came out as if to eject a cd. I have tried pushing it back in, but it immediately comes out again, no matter whether there is a cd in it or not. When there is a cd in the tray, the computer does not read it before it...
I have looked and cannot find info on what the advantages of the fairly new tower fans are to a traditional circular blade fan. Can anyone explain.
I have a fairly large living room that is open to the dining area and kitchen so its hard to cool. I'm limited because my wife doesn't like drafts...