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#1
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No Power to Motherboard
I recently bought a Shuttle AV49VN mobo and a case with a builtin 420w
power supply. My CPU is a P4 2.66GHz, 533MHz fsb, with (2)DDR400 PC3200 512MB RAM. I hooked up all the peripherals, powered it up, it booted up correctly, and BIOS came up on screen. I then turned off the power but it wouldn't come back on. AFter clearing the CMOS jumper, the power will come back on for about a second but then shut itself down. I"ve checked the jumper settings for my CPU speed, and the CMOS. The CPU fan appears to be hooked up correctly as well. Occasionally after clearing CMOS, I can get the power to come on and stay on by turning on the main power switch in back and then turning on the front panel power switch, but then I cannot shut the system down using the power switch on my front panel - only by using the main power switch on the back of the case. But then the power won't come back on at all. Could anyone provide me with any ideas on what to check next? i checked for grounding problems by taking the mobo out of the case and keeping it in the box, with no change. I removed all my drives, etc. and now just have the video card, RAM, and power supply connected to the mobo. Same problem. So it's not the drives. I think I need to change something in the CMOS, but I don't know what to change. Thanks in advance for any ideas, Matt |
#2
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on Sat January 3 2004 6:55 pm, Matt decided to enlighten us with:
I recently bought a Shuttle AV49VN mobo and a case with a builtin 420w power supply. My CPU is a P4 2.66GHz, 533MHz fsb, with (2)DDR400 PC3200 512MB RAM. I hooked up all the peripherals, powered it up, it booted up correctly, and BIOS came up on screen. I then turned off the power but it wouldn't come back on. AFter clearing the CMOS jumper, the power will come back on for about a second but then shut itself down. I"ve checked the jumper settings for my CPU speed, and the CMOS. The CPU fan appears to be hooked up correctly as well. Occasionally after clearing CMOS, I can get the power to come on and stay on by turning on the main power switch in back and then turning on the front panel power switch, but then I cannot shut the system down using the power switch on my front panel - only by using the main power switch on the back of the case. But then the power won't come back on at all. Could anyone provide me with any ideas on what to check next? i checked for grounding problems by taking the mobo out of the case and keeping it in the box, with no change. I removed all my drives, etc. and now just have the video card, RAM, and power supply connected to the mobo. Same problem. So it's not the drives. I think I need to change something in the CMOS, but I don't know what to change. Do you have both the 20 pin and 4 pin connectors connected to the motherboard? There are 2 power supply connectors that have to be plugged into the motherboard on P4 systems. |
#4
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Thanks for your help.
Turned out just to be a bad power supply Everythings fine now Matt |
#5
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On 4 Jan 2004 15:14:34 -0800 In this world we created
(Matt) wrote : Thanks for your help. Turned out just to be a bad power supply Everythings fine now Matt Glad all is well :O) -- Free Windows/PC help, http://www.geocities.com/sheppola/trouble.html email shepATpartyheld.de Free songs download, http://www.soundclick.com/bands/8/nomessiahsmusic.htm |
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