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Will not power up 1
- Thread starter evercraft
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1
- #2
First order of business is to check and double check ALL connections, take video card out, clean gold connectors and replace. Look around for anything not plugged in.
Then try and boot up.
Next order of business would be to re-set the bios. If you have the manual or cd with manual, get the info from that. Most of the time its remove all power to the motherboard then remove the coin battery then move the jumper from pins 1 and 2 to pins 2 and 3, leave them a few minutes, put jumper back to pins 1 and 2, put battery back in, add power and boot.
If that fails, best thing to do now is to take out all usb and pci items that you dont absolutely need. Dont take out video card if its needed, but take out all the rest. Also unhook everything that is ide except your boot hard drive and see if it will boot up.
If that fails, try a different keyboard and mouse, if you have extras.
If no go then take out cpu\heatsink\fan. Clean dust\dirt from heatsink and fan, remove thermal paste or pad from cpu, clean with isopropyl alcohol and apply new thermal paste and re-seat all.
If no go its time to take everything out of the case and let us know when you have done that.
Also, can i asked how you checked the power supply? There are different rails (voltage lines) and each and every line has to be checked. You need a multimeter and know-how to do this. You can get a tutorial using google or go to techrepublic, join free and find the tutorial for troubleshooting power supplies.
Good advice + great people = tek-tips
Then try and boot up.
Next order of business would be to re-set the bios. If you have the manual or cd with manual, get the info from that. Most of the time its remove all power to the motherboard then remove the coin battery then move the jumper from pins 1 and 2 to pins 2 and 3, leave them a few minutes, put jumper back to pins 1 and 2, put battery back in, add power and boot.
If that fails, best thing to do now is to take out all usb and pci items that you dont absolutely need. Dont take out video card if its needed, but take out all the rest. Also unhook everything that is ide except your boot hard drive and see if it will boot up.
If that fails, try a different keyboard and mouse, if you have extras.
If no go then take out cpu\heatsink\fan. Clean dust\dirt from heatsink and fan, remove thermal paste or pad from cpu, clean with isopropyl alcohol and apply new thermal paste and re-seat all.
If no go its time to take everything out of the case and let us know when you have done that.
Also, can i asked how you checked the power supply? There are different rails (voltage lines) and each and every line has to be checked. You need a multimeter and know-how to do this. You can get a tutorial using google or go to techrepublic, join free and find the tutorial for troubleshooting power supplies.
Good advice + great people = tek-tips
- Thread starter
- #3
Thanks garebo, I used a multimeter to test the power supply first and then went ahead and tried one that I knew was good just to double check. I stripped everything out last night including the mb and did a visual inspection and everything appears to look ok. No burns or anything abnormal. Tonight I will try putting back the minimum hardware and see what I get.
Question on moving jumper to pins 2&3 to clear bios, do you need to apply power while they are jumpered?
Question on moving jumper to pins 2&3 to clear bios, do you need to apply power while they are jumpered?
Usually not, but some motherboards the answer is yes.
What is the make and model of your motherboard?
some Pc Chips (Elite, ECS) mobos, you have to apply power,most you dont, and you have to be careful with this as you could cause damage to the mobo.
Do you have a paper manual or a cdrom that came with the motherboard that might have the manual in it?
If not then you only need the make and model of the mobo and you can go to the mfgr website and get the cmos re-set info.
Getting back to the power supply, not wanting to argue with you, but what exactly did you check with your multimeter? Did you check all the rails, 5 volt, 12 volt, 3.3 volt? You cant just check the 12 volt rail. But then you do have 2 power supplies, so im sure one would be good, no guarantee though, but it improves the odds quite a bit.
If this is a pentium 4 you have to make sure the special 4 pin 12 volt connector is installed to the mobo.
Good advice + great people = tek-tips
What is the make and model of your motherboard?
some Pc Chips (Elite, ECS) mobos, you have to apply power,most you dont, and you have to be careful with this as you could cause damage to the mobo.
Do you have a paper manual or a cdrom that came with the motherboard that might have the manual in it?
If not then you only need the make and model of the mobo and you can go to the mfgr website and get the cmos re-set info.
Getting back to the power supply, not wanting to argue with you, but what exactly did you check with your multimeter? Did you check all the rails, 5 volt, 12 volt, 3.3 volt? You cant just check the 12 volt rail. But then you do have 2 power supplies, so im sure one would be good, no guarantee though, but it improves the odds quite a bit.
If this is a pentium 4 you have to make sure the special 4 pin 12 volt connector is installed to the mobo.
Good advice + great people = tek-tips
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