vaio <siforse@unaltravolta.com> wrote

> my computer doesn't start, to be precise it turns on, I hear the fans but monitor hang on in stand
> bye.
> I can't hear the RAM count; no sound from internal speaker.

Thats evidence that the cpu isnt starting at all.

> I don't have installed other hardware, computer was working correctly, without problems, all of
> this has happened suddenly.

Thats not unusual with that sort of fault.

> I have an asus motherboard with 800 mhz cpu, 512 RAM (2x256), video card AGP asus, ethernet card,
> controller scsi, sound card c-media, three hard disks (one of them is scsi).

> I have tried two different monitors, another video card (PCI), I have
> unplugged drives and cards, cleared the CMOS, but no results.
> I have also tried with other RAM, without solving the problem.

> Can you help me,

Something has broken and you need to work out what that is.

It could be the power supply, and its a lot
cheaper to try that than the motherboard.

Its very unlikely to be the cpu itself, they dont usually die.

If it isnt the power supply its likely the motherboard.

Check for bad caps. These are the usually blue or black plastic covered
post like things that stick up vertically from the motherboard surface. The
tops should be flat and if any of them have bulged or have leaked, the
problem is bad caps and you need to replace the motherboard.

If you have decided that the problem is likely the motherboard
and you dont plan to replace the whole system, try running the
motherboard loose on the desktop just before replacing it. You
can get a short to case that produces those symptoms and running
the motherboard loose on the desktop is the best test for that.

> thank you and sorry for my english, I am italian.

Its very understandable.