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computer isn't turning on: need help
Thanks for the reply.
Hmmm... the thing is, I can't even get my computer to TURN ON in the first place. I will however take out stuff that isn't necessary to turn on the computer.. never heard of a CMOS battery not allowing the computer to turn on at all, but I will start out with the bare essentials to troubleshoot it. The computer was built only over a year ago. I'll see what I can do when my computer comes in to my new apartment this Friday. Any other ideas out there?? |
#2
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computer isn't turning on: need help
Making changes without first collecting facts can exponentially
complicate a problem. Informed technicians take a 3.5 digit multimeter to find the suspect in but two minutes. Meter so ubiquitous as to be sold even in Lowes, Radio Shack, and Wal-mart for $20. With computer off (but connected to wall AC), measure DC voltage on purple wire from power supply to motherboard. This numbers must exceed 4.87 volts DC. Next measure voltage on green wire before and when power switch is pressed. This measures more than 2 volts and then drops to well below 0.8 volts when switch is pressed. We have done same as the jumper short without making any disconnects. And have obtained much more useful information - especially numbers. Next is gray wire that must rise to more than 2.4 volts within seconds of power switch press. And finally any one of orange, red, and yellow wires; each monitored when switch is pressed and should obtain more than 2.32, 4.87, and 11.7 volts. Any wire that does not at least move some voltage is another important symptom. We see a failure; therefore follow the evidence. Also Numbers are posted so that useful replies are returned. Those numbers - good or bad - provide useful replies. Get the meter. Do not start fixing or changing anything until important facts - the numbers - are obtained. Information in about two minutes that will identify a likely suspect and that will not make more problems. On Feb 4, 12:16 am, (zach_ski) wrote: Hmmm... the thing is, I can't even get my computer to TURN ON in the first place. I will however take out stuff that isn't necessary to turn on the computer.. never heard of a CMOS battery not allowing the computer to turn on at all, but I will start out with the bare essentials to troubleshoot it. The computer was built only over a year ago. I'll see what I can do when my computer comes in to my new apartment this Friday. Any other ideas out there?? |
#3
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computer isn't turning on: need help
w_tom wrote:
Making changes without first collecting facts can exponentially complicate a problem. Informed technicians take a 3.5 digit multimeter to find the suspect in but two minutes. Meter so ubiquitous as to be sold even in Lowes, Radio Shack, and Wal-mart for $20. With computer off (but connected to wall AC), measure DC voltage on purple wire from power supply to motherboard. This numbers must exceed 4.87 volts DC. Next measure voltage on green wire before and when power switch is pressed. This measures more than 2 volts and then drops to well below 0.8 volts when switch is pressed. We have done same as the jumper short without making any disconnects. And have obtained much more useful information - especially numbers. Next is gray wire that must rise to more than 2.4 volts within seconds of power switch press. And finally any one of orange, red, and yellow wires; each monitored when switch is pressed and should obtain more than 2.32, 4.87, and 11.7 volts. This prat keep plucking these stupid numbers out of his arse. They are nothing like the ATX spec and that is the completely superfluous proof that he doesnt even understand how a multimeter works. Any wire that does not at least move some voltage is another important symptom. We see a failure; therefore follow the evidence. Also Numbers are posted so that useful replies are returned. Those numbers - good or bad - provide useful replies. Get the meter. Do not start fixing or changing anything until important facts - the numbers - are obtained. Information in about two minutes that will identify a likely suspect and that will not make more problems. On Feb 4, 12:16 am, (zach_ski) wrote: Hmmm... the thing is, I can't even get my computer to TURN ON in the first place. I will however take out stuff that isn't necessary to turn on the computer.. never heard of a CMOS battery not allowing the computer to turn on at all, but I will start out with the bare essentials to troubleshoot it. The computer was built only over a year ago. I'll see what I can do when my computer comes in to my new apartment this Friday. Any other ideas out there?? |
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