boot problems

[Tam Henson]

Hi,
I need some advice. I have a computer that I built, it has a gigabyte A socket mobo and a amd duron 750 processor. When I first put it toghter and loaded the OS (win 98) it work fine, got to my net work, reached the server, ect. ect.. Then I went through the shut down, it shut off like it was pose to, but the next day when I went to turn it on nothing, nothing at all. I checked all the cables and power cords all where fine, still nothing. Checked the power supply switch the voltage is set right then I turned the switch on the back of the power supply off then back on and the fans started up the HD started to spin and win98 came up. I went through the shut down again and it did fine. I then turned it back on it came up fine. The next time I did this it would not come on again. The only way to get anything from it is to flip the switch on the back of the power supply off and on, but it will not go any ferther then the fans starting and the HD spining up. NO beeps nothing on the monitor in fact the light on the monitor stays amber. As far as I can think of I think the mobo is toast! can some one give me help on this?

Thank You. Tam

[iisbob]

What size power do you have? is it an old one from another system or did it come new? You need at least 300 watts for athlons/durons to function-could be just a bad power supply, i've had that happen before, even brand new ones can be faulty. If you can either exchange it for a new one or see if you can borrow one to check if it works with your system. Also i would check the power cable connections to the mobo and make sure they are secure.

Luck! http://www.PCGuide.com/ubb/wink.gif

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iisbob
"Soap and education are not as sudden as a massacre, but they are more deadly in the long run."

[ranchdog]

Hey Tam Welcome! After checking the PSU....Would it be possible you would have a spare CPU that you could give a try? I realize they are the ^%*#^ to swap out but because of the HSF clips but see if you can give it a shot. Use Thermal grease and be certain the HSF are mounted correctly, etc. etc. If you don't have a spare remove yours carefully and see if a corner has been knocked off the chip itself during assembly. If everything looks Kosher then it's on to the Mboard. Hang In There.
You gotta check the RAM man!
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"Lemmee Fix That Thing......."
-Beauty is only a light switch away.-

[This message has been edited by ranchdog (edited 07-19-2001).]

[wiltrot]

To test a power supply, you will need a digital multimeter. The analog type, with the needle-style readout, can damage computer circuits. The multimeter has two probes: red and black. Touch the black probe to the computer chassis for grounding and then use the red probe for testing.
When testing the power supply, you must check it in place; readings obtained while disconnected from a load will not be accurate. You can’t disconnect the connectors while the computer is running, of course, so you must use a technique called back probing to take your measurements. With back probing, you stick the red probe into the back of the connector and touch the wire down inside the plastic plug.
The various power supply wires should test out at voltage-wise. The first wire to test is the Power_Good; if it is between +3V and +6V, the power supply is probably doing its job.PIN PURPOSE
Pin 1 (Orange) +3.3V
Pin 2 (Orange) +3.3V
Pin 3 (Black) Ground
Pin 4 (Red) +5V
Pin 5 (Black) Ground
Pin 6 (Red) +5V
Pin 7 (Black) Ground
Pin 8 (Gray) Power_Good
Pin 9 (Purple) +5VSB (Standby)
Pin 10 (Yellow) +12V
Pin 11 (Orange or Brown) +3.3V
Pin 12 (Blue) -12V
Pin 13 (Black) Ground
Pin 14 (Green) PS_On
Pin 15 (Black) Ground
Pin 16 (Black) Ground
Pin 17 (Black) Ground
Pin 18 (White) -5V
Pin 19 (Red) +5V
Pin 20 (Red) +5V



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What's up with that?