Booting up - no beep

[oceanclub]

When I tried to use my PC this morning (A7A266 M/B, 2400+ Athlon,
1.25GB RAM), I couldn' turn the monitor. When I reboot, there's no BIOS
beep. The fans are working and there's a light on the motherboard, but
nothing else.

Since there's a motherboard light, there's obviously power going
through it - any idea where there is no BIOS error code beep for any
kind? Any idea what I should do now?

Thanks,

P.

 

[Daniel Mandic]

Hi!


If nothing is broken (maybe you just have a contact problem), you could
demontage everything and setting it up again. So you prevent any
contact problems. You could also start with the VGA-Card, turning on...
removing ram and set in again.... etc...
Demontaging all at the same the time and doing it together again, is
IMO the fastest way to check any failing contacts.

If the problem stays..... something might be broken. And this could be
everything... (PSU, VGA, RAM, CPU, MB etc...)





Best Regards,

Daniel Mandic

 

[oceanclub]

Hi Daniel,

Thanks for the tips. So far I tried the following:

* Checking connections were firm

* Replacing the CPU with an old one I know working (1800+ Athlon)

* Replacing the memory with old memory that worked

* Taking out all components except:

Above CPU

Above memory

Graphics card

Hard drive

So far, nothing. The motherboard light comes out and the various
fans/drives power up. But there's no beep and the monitor stays black.

Oh, I also tried removing the motherboard battery and replacing it
after
an hour to clear the CMOS.

Does it look like the motherboard is the problem?

Cheers,

P.

 

[Daniel Mandic]

Does it look like the motherboard is the problem?

Cheers,

P.

Maybe.


Don´t forget to check Graphics Card.
Check the pins with the Monitorcable.... PSU Cable Plug...
Change PSU!?




Best Regards,

Daniel Mandic


--

 

[oceanclub]

I don't have a spare graphics card unfortunately. I presume
if I take it out altogether, the machine should give some response
(i.e. beep?) if the motherboard isn't the problem?

P.

 

[Greysky]

Hi Daniel,

Thanks for the tips. So far I tried the following:

* Checking connections were firm

* Replacing the CPU with an old one I know working (1800+ Athlon)

* Replacing the memory with old memory that worked

* Taking out all components except:




So far, nothing. The motherboard light comes out and the various
fans/drives power up. But there's no beep and the monitor stays black.

Oh, I also tried removing the motherboard battery and replacing it
after
an hour to clear the CMOS.

Does it look like the motherboard is the problem?

Ouch -- this sounds like a mainboard problem. Did you recently update your
boards BIOS? Another likely contender is the power supply. If it died, the
symptoms you describe are what you would get. I would check the voltage
levels on your power supply, or just swap it out with a known good one and
if it works, throw the old one out. If the power supply did go bad,
hopefully it didn't destroy anything else...

 

[oceanclub]

If the PSU died, the symptoms you describe are what you would get.

Really? Just curious as it sounds counter-intuitive to me. As
mentioned, everything connected to the power supply powers up -
motherboard,
drives, fans, graphics card, etc. It's just that the system doesn't
boot or beep. Unfortunately I don't have a spare power supply, but I
might try to borrow one. It's only a relatively new Antec one too.

Cheers,

P.