Computer doesn't power on yet PSU is fine





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I have an old computer with an Asus P4T-E motherboard. The power switch has been a problem in the past, so I added a new momentary switch to the case and connected it to the motherboard's ATX Power Switch header pins.



The computer has been working fine ever since, yet when I tried to start it a few days ago, it would no longer start after being powered off for a few months.



I've checked the switch with a multimeter, no problem there. I checked the PSU and all voltages checked out fine. The on-board LED of the motherboard is active, so the motherboard has power.



Yes, the computer is old, and yes it has already been replaced, but I still have some uses for it so I'd like to get it up and running again.



Does anybody have any suggestions as to what I should check next?



Thanks in advance!










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  • 1





    Check the capacitors for leaks and bulges. Since its really old, your capacitors could be failing.

    – essjae
    Feb 4 at 22:30











  • @essjae: Thanks, but sorry, forgot to mention... The PSU is fairly new, so no capacitor issues there, and I've checked the motherboard for failing capacitors, but they all are in mint condition. I still have a 486 and several old Pentiums that don't have any capacitor issues, so I'd expect the same of a Pentium IV motherboard to be honest.

    – Marlon
    Feb 5 at 17:59


















0















I have an old computer with an Asus P4T-E motherboard. The power switch has been a problem in the past, so I added a new momentary switch to the case and connected it to the motherboard's ATX Power Switch header pins.



The computer has been working fine ever since, yet when I tried to start it a few days ago, it would no longer start after being powered off for a few months.



I've checked the switch with a multimeter, no problem there. I checked the PSU and all voltages checked out fine. The on-board LED of the motherboard is active, so the motherboard has power.



Yes, the computer is old, and yes it has already been replaced, but I still have some uses for it so I'd like to get it up and running again.



Does anybody have any suggestions as to what I should check next?



Thanks in advance!










share|improve this question


















  • 1





    Check the capacitors for leaks and bulges. Since its really old, your capacitors could be failing.

    – essjae
    Feb 4 at 22:30











  • @essjae: Thanks, but sorry, forgot to mention... The PSU is fairly new, so no capacitor issues there, and I've checked the motherboard for failing capacitors, but they all are in mint condition. I still have a 486 and several old Pentiums that don't have any capacitor issues, so I'd expect the same of a Pentium IV motherboard to be honest.

    – Marlon
    Feb 5 at 17:59














0












0








0








I have an old computer with an Asus P4T-E motherboard. The power switch has been a problem in the past, so I added a new momentary switch to the case and connected it to the motherboard's ATX Power Switch header pins.



The computer has been working fine ever since, yet when I tried to start it a few days ago, it would no longer start after being powered off for a few months.



I've checked the switch with a multimeter, no problem there. I checked the PSU and all voltages checked out fine. The on-board LED of the motherboard is active, so the motherboard has power.



Yes, the computer is old, and yes it has already been replaced, but I still have some uses for it so I'd like to get it up and running again.



Does anybody have any suggestions as to what I should check next?



Thanks in advance!










share|improve this question














I have an old computer with an Asus P4T-E motherboard. The power switch has been a problem in the past, so I added a new momentary switch to the case and connected it to the motherboard's ATX Power Switch header pins.



The computer has been working fine ever since, yet when I tried to start it a few days ago, it would no longer start after being powered off for a few months.



I've checked the switch with a multimeter, no problem there. I checked the PSU and all voltages checked out fine. The on-board LED of the motherboard is active, so the motherboard has power.



Yes, the computer is old, and yes it has already been replaced, but I still have some uses for it so I'd like to get it up and running again.



Does anybody have any suggestions as to what I should check next?



Thanks in advance!







motherboard power-supply






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share|improve this question











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share|improve this question










asked Feb 4 at 22:18









MarlonMarlon

211




211








  • 1





    Check the capacitors for leaks and bulges. Since its really old, your capacitors could be failing.

    – essjae
    Feb 4 at 22:30











  • @essjae: Thanks, but sorry, forgot to mention... The PSU is fairly new, so no capacitor issues there, and I've checked the motherboard for failing capacitors, but they all are in mint condition. I still have a 486 and several old Pentiums that don't have any capacitor issues, so I'd expect the same of a Pentium IV motherboard to be honest.

    – Marlon
    Feb 5 at 17:59














  • 1





    Check the capacitors for leaks and bulges. Since its really old, your capacitors could be failing.

    – essjae
    Feb 4 at 22:30











  • @essjae: Thanks, but sorry, forgot to mention... The PSU is fairly new, so no capacitor issues there, and I've checked the motherboard for failing capacitors, but they all are in mint condition. I still have a 486 and several old Pentiums that don't have any capacitor issues, so I'd expect the same of a Pentium IV motherboard to be honest.

    – Marlon
    Feb 5 at 17:59








1




1





Check the capacitors for leaks and bulges. Since its really old, your capacitors could be failing.

– essjae
Feb 4 at 22:30





Check the capacitors for leaks and bulges. Since its really old, your capacitors could be failing.

– essjae
Feb 4 at 22:30













@essjae: Thanks, but sorry, forgot to mention... The PSU is fairly new, so no capacitor issues there, and I've checked the motherboard for failing capacitors, but they all are in mint condition. I still have a 486 and several old Pentiums that don't have any capacitor issues, so I'd expect the same of a Pentium IV motherboard to be honest.

– Marlon
Feb 5 at 17:59





@essjae: Thanks, but sorry, forgot to mention... The PSU is fairly new, so no capacitor issues there, and I've checked the motherboard for failing capacitors, but they all are in mint condition. I still have a 486 and several old Pentiums that don't have any capacitor issues, so I'd expect the same of a Pentium IV motherboard to be honest.

– Marlon
Feb 5 at 17:59










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