This is a brand new install. I was in BIOS and was in the PCI screen and the competer powered down. I didn't do anything. Any ideas?
2006-10-04 15:37:12 · 11 answers · asked by oyving 2 in Computers & Internet ➔ Hardware ➔ Desktops
I'm still having the problem. How do you bypass the power switch? Can I use a jumper? BTW, I do hear a hum when it is plugged in.
2006-10-08 12:45:09 · update #1
I have the CPU, Motherboard & Memory plugged in and all else is disonnected. (Video is on the motherboard) and it still won't boot.
2006-10-08 12:56:06 · update #2
Then you would need a new power switch.
2006-10-04 15:38:56 · answer #1 · answered by dreamer 3 · 1⤊ 0⤋
You may want to check these possibilities:
The board may be grounding to a location that it shouldn't - Check to see if any part of the board is touching the case that shouldn't be. Many boards will not boot if a short is detected.
Confirm your connections: check the motherboard instructions. The pins have specific directions, make sure the power switch is conncected to the pins correctly.
While booting and working in BIOS it shouldnt affect you if you power down. It only writes to the prom once you tell it to save. But try resetting the BIOS anyway. Remove the power cable from the back, and then remove the battery from the motherboard for about 30 seconds. This will force the board to reset. (The battery is the size of a quarter - cant miss it)
Finally, make sure that the power supply is good. Try a different one as a last result. You would be amazed how many times I have had a bad power supply on an end users new workstation.
2006-10-12 22:24:01 · answer #2 · answered by mjohnson2469 3 · 0⤊ 0⤋
If the motherboard is ATX, the switch connects to the motherboard, not the power supply. If you see the power supply fan twitch when you hit the button, the problem is most probably not the switch or power supply.
ATX has a feature that assures a 'known good 5v line'; if some device on the 5v bus shorts out and pulls that voltage down too low, the power supply will shut itself off. Usually such failures can be traced to an accessory card.
Troubleshooting such failures is fairly straightforward. Using proper ESD protection measures (like a wrist strap), remove all connections from the motherboard not required to start up to BIOS. Disconnect floppies, IDE drives, USB everything, etc. In the end, you should have motherboard, power switch, video card, and memory. If it powers on, start reconnecting things until it stops powering on, and you will know the last thing you cabled up is the culprit.
If this doesn't ressurrect it, you should probably proceed to replacing parts - preferably, locate known good loaners. Power supply, Video card, Memory, etc. If you have more than one stick of memory, you can remove one of them, then swap them, to isolate failures between them. Last resort is the motherboard/processor.
Good luck!
2006-10-04 22:46:34 · answer #3 · answered by jstevewhite 2 · 0⤊ 0⤋
Try bypassing the power switch temporarily to see if the computer turns on, if it does not then it means your motherboard / cpu is shot.
As a last resort you can try removing the CMOS battery from your motherboard for an hour or two then try rebooting as your CMOS will be reset once you remove the battery.
2006-10-04 22:42:57 · answer #4 · answered by froggy010101 4 · 0⤊ 0⤋
The power switch plugs onto the motherboard. Check it. Maybe it wasn't in tight.
You can test the switch with an ohm meter.
2006-10-04 22:40:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
You may have messed something up and locked out your CMOS, you need to reset CMOS via jumpers on your board OR if you don't have (or can't locate jumpers) then remove the system button battery cell and leave it out for AT LEAST 15 minutes, then pop it back in and it 'should' start up and allow you to reconfigure anything u need in CMOS
2006-10-04 22:39:43 · answer #6 · answered by The::Mega 5 · 0⤊ 0⤋
Try resetting the CMOS by shorting the CMOS jumper. The BIOS setup will come to default value and u can work.
2006-10-09 08:21:06 · answer #7 · answered by sudeep s 2 · 0⤊ 0⤋
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2006-10-04 22:42:35 · answer #8 · answered by Anonymous · 0⤊ 1⤋
Power supply is inadequate to run the system.
2006-10-04 23:03:15 · answer #9 · answered by Anonymous · 0⤊ 0⤋
go to www.techguys.org they have been online for 12 years.
Good Luck,
2006-10-12 13:42:43 · answer #10 · answered by semi273hemi 4 · 0⤊ 0⤋