I have been having problems the past 3 months, when I turn my computer on I push the button and probably twice a week it turns on for a split sec then turns off I get no screen just I see lights turn on then right off, I have to unplug for a couple of seconds then plug back in then everything is fine, I have no errors no blue screens at all and computer runs great, is something going out? can someone give me a hint so that if it does I know what to buy? Thanks

It's probably one of the following:

1: The CMOS battery on the motherboard is dying. Just replace the battery. It looks like a watch battery.

2: The power button is damaged. If the button sticks or something, it could inadvertatly turn the computer off. Hard to diagnose without replacing the switch.

3: The power supply could be bad. Again, hard to diagnosis with this particular problem without replacing it.

-Ryan Adams
http://RyanTAdams.com

Try reseating all cards, cables and RAM. Unplug the computer and take proper static precautions.

I tend to think more being the start button or the power supply, the whole computer was replaced Motherboard, cables, DVD and CD drive, hard drive 2 years ago under insurance with Comp USA, everything even the memory, except the power supply and the start button and of course the cables from the power supply I just want to be prepared when I turn it on and it will not go on at all? If I replace the power supply do I replace it with the same power which is 350 or do I go up? Of course I am not replacing anything till it does go but at least I can get prepared on what to buy.

The start button is a long shot, but the PSU is a possibility. When's the last time you cleaned the inside of the case?

"do I replace it with the same power which is 350 or do I go up?"

That depends on your system specs & what your future plans are. The system will only use as much power as it needs, so if you went with a higher wattage unit, you wouldn't be wasting electricity. It'd be better to get a 500W unit (for example) & have a 150W safety factor, than have a 350W unit running close to max capacity.

"And that's the fishing line, because Sharkboy said so!"

Thank You Jam, I will clean my computer tomorrow and start looking for a replacement, I won't buy it yet but will line up a CPU and battery and look at the starter button at least I can be prepaired to try and fix it if it goes.

I have no problem starting it once I unplug then plug it back in so maybe it just needs to be cleaned, I clean it just about every couple of months because I do have long haired dogs so thanks for all the information, just incase I need it. I will also ask the motherboard people if I can go up in the wattage of the cpu.