No boot, No beep 2

[leetk00]

I bought brand New Everex Explora 1GHz system recently.
I had to format the HDD and install Korean Windows Me. During the installation, there was power recycling or maybe rebooting. But since then, PC does not boot up. Floppy, HDD, CD-ROM all does not look like have power(When I disconnect the control cable, CD-ROM's power came in. How can motherboard do this?). No video output and no audible beep. Nothing but IDLE LED on. Even No power LED on.
I checked the outputs from PSU(250W) and were ok.
Looks like Flash bios does not even run but I am not sure.
Flash bios can be deleted? Or CMOS data screwed up?
The Motherboard is AZ11 from FIC and the PSU is FSP250-60GTA from Sparkle Power.

Please help me.
TK

 

[edfair]

Slow power good signal will cause this,especially with fast M/B. But using reset switch will then allow normal boot up.
Memory failure can cause this.
Were you getting OK beep when the system was installing ME? If speaker was OK before then would expect it to still be good and your failure happening prior to enabling post error beep codes. Ed Fair
efair@atlnet.com

Any advice I give is my best judgement based on my interpretation of the facts you supply.

Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[leetk00]

Reset button does not work either.
I used this system for two days with English Windows Me.
So I presume the Memory should be ok too.
Now I do not get any beep nor POST.
I tried clear CMOS and nothing changed.
If the CMOS data is bad, BIOS does not run at all?
How can I override this?

 

[jgoodman00]

software u have installed should never stop the computer from switching on....At the point of intial power-up as far as i am aware the computer is running purely on it's bios & as such a different version of ME would not affect it. I guess in theory that version of ME could have something to flash the bios into that countries settings, & if so it could screw it up, but i very very much doubt it. A far more logical conclusion would be that the mainboard has either failed (completely), or you have dislodged power to it. In theory, any error whatsoever should still enable the mainboard to power-on & then any errors it encounters during initialisation should be flagged, apart from a catastrophic mainboard failure. Are you sure in examining the mainboard & other components you have dislodged something, either stopping the mainboard from powering up (you could check this with a multimeter by checking after the voltage regulator). It is possible that you have a component error, but the error either is or includes the system speaker....hence no audible warning....

 

[edfair]

Either power good is gone totally, or the M/B is gone , or the memory is gone. Try reseating the memory several times, if it is oxidation on contacts it may break thru.
You really need a logic probe to go much further into the processor. BTW, reseat the processor, too.
Idle light coming on, and power light coming on indicate the +5 is OK which probably means that most of the PS is good.
Ed Fair
efair@atlnet.com

Any advice I give is my best judgement based on my interpretation of the facts you supply.

Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[leetk00]

I saw similar problem from other Forum and the problem was its PSU did not provide enough current for 3.3V output.
Do you think if 3.3V is not enough, motherboard even does not boot like this?

 

[edfair]

Suspect that a 250w will supply anything you need. In the original post did you say that the power on light wasn't working? And in the original post you also said that there was rebooting. Both of these can be power supply problems, but since you have measured the outputs it appears that power is sufficient. But you also need to check the power good signal to verify that it is over 3 volts. That should be enough to get the oscillator kicking. Can you swap in another power supply? Ed Fair
efair@atlnet.com

Any advice I give is my best judgement based on my interpretation of the facts you supply.

Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 

[hc25036]

I had exctly this problem on an Athlon 800 system and it was a failed 3.3v supply - the 250v was fine. Try a different PSU if you can.
A dislodged video card can also cause this problem with some types of BIOS, so it may be worth making sure your video card is seated properly as well

 

[HunterKiller]

I have the exact same problem as well. This is my current configuration:

ASUS CUSL2-C Motherboard
Pentium III 800E Retail Box
GlobalWin FOP38 HeatSink/Fan.
256 MB PC133 SDRAM 3.3V
Enlight Mid-Tower Case with 250W Power Supply

I am figuring that it's the Power Supply that is causing the problem. I hear that optimal performance for higher speed CPUs require a Power Supply with higher watts (at least 300W). I suggest trying to replace the Power Supply and see what happens.

sincerely,
Greg

 

[InfoCorp]

I had a similar problem with a customers PIII-800. It turned out to be a problem on the motherboard