Power Up Question

  • Thread starter Thread starter Crow T Robot
  • Start date Start date
C

Crow T Robot

Tried to boot my computer today and the Power Led and the Green HD light
came on but the system would not boot could it be the motherboard battery?
If it was dead? Computer has been working fine up until today?

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Website - http://www.sithicus.org

"Try not, do or do not there is no try" - Yoda(Empire Strikes Back)


Suggestion(s) or comments?
 
Crow T Robot said:
Tried to boot my computer today and the Power Led and the Green HD light
came on but the system would not boot could it be the motherboard battery?
If it was dead? Computer has been working fine up until today?
Click to expand...


I think that most likely your PSU may be faulty or something else other than
just the CMOS battery.
If you can, open up the case and make sure all the fans are running.
If this appears ok, then start stripping the machine of hardware and leave
just the, VID card- memory- cpu and try to boot it.
 
None of the fans come on.

JAD said:
I think that most likely your PSU may be faulty or something else other
than just the CMOS battery.
If you can, open up the case and make sure all the fans are running.
If this appears ok, then start stripping the machine of hardware and leave
just the, VID card- memory- cpu and try to boot it.
Click to expand...
 
Crow said:
None of the fans come on.
Click to expand...

I would suggest checking if the motherboard could be grounding out to
the case; try running caseless and see what happens. Also if you have
your mobo manual handy, triple-check all the fan headers as well. Can
your PSU handle all your components? Do you get any beep codes at all?
 
Crow T Robot said:
The system was working fine two days ago. I tried booting today and she
was AWOL.
Click to expand...

My guess is the power supply. Just a guess though. It is the most likely
culprit, but it could be the MB or about anything. Without a well supplied
test bench with multimeter and known good spares it is tough to diagnose.

Ed
 
We can speculate all day - and still need data. In two
minutes, the integrity of a power supply 'system' can be
confirmed. 'System' ; not just the power supply. Essential
tool is the 3.5 digit multimeter - so ubiquitous as to even be
sold in Sears, Home Depot, Lowes, and Radio Shack. What to
measure and what each wire does is described in text posted
previously:
"Computer doesnt start at all" in alt.comp.hardware on 10
Jan 2004 at
http://tinyurl.com/2t69q and
"I think my power supply is dead" in alt.comp.hardware on 5
Feb 2004 at
http://www.tinyurl.com/2musa

In your case, very first measurement is to purple wire.
Voltage on gray wire is taken before and during power switch
press. Voltage on red, yellow, and orange wires in first two
seconds as power switch is pressed is also informative.

Acceptable numbers would be in upper 3/4 limits provided in
a chart in those previous posts.

Even if you don't understand the data, others with
sufficient knowledge would be empowered; can answer your
question. IOW your responses will only be as good as the data
you provide. That means numbers.

Lights can come on and still the voltage is not sufficient
to operate the computer. Voltage must not just exist. It
must meet specific limits. LEDs only tell us the computer is
plugged into an AC receptacle.
 
Crow T Robot said:
Tried to boot my computer today and the Power Led and the Green HD light
came on but the system would not boot could it be the motherboard battery?
If it was dead? Computer has been working fine up until today?

--
*********************End Transmission********************************
Send all complaints, requests and/or thanks to (e-mail address removed)

ICQ #34907449


Website - http://www.sithicus.org

"Try not, do or do not there is no try" - Yoda(Empire Strikes Back)


Suggestion(s) or comments?
Click to expand...
 
You are not done. This is a two way street. All expect to
learn. Provide feedback such as how the problem was identified
AND how it was solved.
 
w_tom said:
You are not done. This is a two way street. All expect to
learn. Provide feedback such as how the problem was identified
AND how it was solved.
Click to expand...

Yes. What was the problem and how did you determine it? Inquiring
minds want to know; your solution may be useful to others in the future.
 
Pulled the CompUSA power supply and replaced with a new Antec Neo HE 500
watt power supply. Basically trial and error I just managed to guess right
on the first trial. I figured it wasn't the battery because my led's were
coming on and nothing really looked out of place or wrong with the MB. I
did try and unplug different devices from the PS and that didn't solve the
problem so I just took a guess. Something was rattling around in the Power
Supply after I took it out of the system.
 
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