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Help required Asus A7N8X deluxe power oddity
Recently and for no apparent reason when shutting down from windows XP the
PC would shutdown and you would hear the drives power down e.t.c and the power light would go out but the hard drive light would stay on permenantly and the cpu/AGP card and chassis fans would stay on. Only by switching the hard switch on the back could I get the whole PC to completely power off. A strange problem but although a concern was not seroius as I could power the PC back on as normal by pressing the power button on the front and all would boot up and operate as normal until I once again wanted to power off the PC and the same thing happened again. I scoured the internet looking for similar problems and found only one thread that matched my problem with the conclusion being to accept the PC was working ok and not to worry about it. Being a bit of a prefectionist when it comes to my PC I was not happy but accepted this. Until now that is when I went to power up the PC this morning. I switched on the hard switch at the back as normal and the HD light and fans came on as normal but when I puched the power swith I got nothing. Basically to cut a long story short. I have disconnected everything and taken off all memory e.t.c to leave just the cpu,motherboard and PSU connected and still cpu fan powers up just by putting the power cable in the back and switching the Hard power switch on the PSU. I have even taken the MB off it's mountings and held it away from the case and exactly the same thing happens. I have swapped the PSU with another that I know works. I have swapped the CPU with another I know works and exactly the same thing. The only conclusion I can come to is that there is some kind of short or fault on the motherboard. Before I give in and have to replace it. Does anyone have any suggestions? Thanks in advance Sie |
#2
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In article , "Sie"
wrote: Recently and for no apparent reason when shutting down from windows XP the PC would shutdown and you would hear the drives power down e.t.c and the power light would go out but the hard drive light would stay on permenantly and the cpu/AGP card and chassis fans would stay on. Only by switching the hard switch on the back could I get the whole PC to completely power off. A strange problem but although a concern was not seroius as I could power the PC back on as normal by pressing the power button on the front and all would boot up and operate as normal until I once again wanted to power off the PC and the same thing happened again. I scoured the internet looking for similar problems and found only one thread that matched my problem with the conclusion being to accept the PC was working ok and not to worry about it. Being a bit of a prefectionist when it comes to my PC I was not happy but accepted this. Until now that is when I went to power up the PC this morning. I switched on the hard switch at the back as normal and the HD light and fans came on as normal but when I puched the power swith I got nothing. Basically to cut a long story short. I have disconnected everything and taken off all memory e.t.c to leave just the cpu,motherboard and PSU connected and still cpu fan powers up just by putting the power cable in the back and switching the Hard power switch on the PSU. I have even taken the MB off it's mountings and held it away from the case and exactly the same thing happens. I have swapped the PSU with another that I know works. I have swapped the CPU with another I know works and exactly the same thing. The only conclusion I can come to is that there is some kind of short or fault on the motherboard. Before I give in and have to replace it. Does anyone have any suggestions? Thanks in advance Sie Maybe the motherboard has a short between +5VSB and +5V ? If you have an ohmmeter, you could disconnect the ATX 20 pin connector and check for a short between pins. Generally, returning the motherboard is the only option, unless the short is an obvious solder blob somewhere. HTH, Paul |
#3
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Have you recently installed any programs? I just built a PC on that
same mobo and it took me over 3 weeks to solve the same kind of problem. Turned out to be an HP backup program; once removed all is well. Then the other night I was testing some wma-mp3 converter utilities and found that program also left the PC up, although I could soft off from the keyboard (something that didn't work with regards to the HP glitch). I also removed that program and all is well again. Not sure if it's an ASUS thing or what; I've run into shut down issues on 2 different models of ASUS mobos..... |
#4
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I agree with Mr Goat.
There are several programs around that can be configured to shutdown when they have finished doing what they have to do. You current problem (may be separate and coincidental) may be the result of Power Fail / Restart settings in the bios. I forget the settings but basically the intent is if you have a UPS and the power goes off without a tidy shutdown, then one of the settings is to automatically power on when AC is restored so that the UPS can restart the system automatically. May be not... - Tim "Rivergoat" wrote in message ... Have you recently installed any programs? I just built a PC on that same mobo and it took me over 3 weeks to solve the same kind of problem. Turned out to be an HP backup program; once removed all is well. Then the other night I was testing some wma-mp3 converter utilities and found that program also left the PC up, although I could soft off from the keyboard (something that didn't work with regards to the HP glitch). I also removed that program and all is well again. Not sure if it's an ASUS thing or what; I've run into shut down issues on 2 different models of ASUS mobos..... |
#5
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My problem did not ever lye with locked up shutdowns. As far windows was
concerned the PC had shutdown successfully and the all powered off including power light apart from fans and HD light which then stuck on. It is however only yesterday that the PC will not switch on at all and only the fans and hd light comes on as soon as I plug the power cable in. If this is a BIOS restart setting then how do I reset it? Thanks Sie "Tim" wrote in message ... I agree with Mr Goat. There are several programs around that can be configured to shutdown when they have finished doing what they have to do. You current problem (may be separate and coincidental) may be the result of Power Fail / Restart settings in the bios. I forget the settings but basically the intent is if you have a UPS and the power goes off without a tidy shutdown, then one of the settings is to automatically power on when AC is restored so that the UPS can restart the system automatically. May be not... - Tim "Rivergoat" wrote in message ... Have you recently installed any programs? I just built a PC on that same mobo and it took me over 3 weeks to solve the same kind of problem. Turned out to be an HP backup program; once removed all is well. Then the other night I was testing some wma-mp3 converter utilities and found that program also left the PC up, although I could soft off from the keyboard (something that didn't work with regards to the HP glitch). I also removed that program and all is well again. Not sure if it's an ASUS thing or what; I've run into shut down issues on 2 different models of ASUS mobos..... |
#6
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Sie
That won't be a bios setting although it could be a corrupt bios or bios chip, video card, psu, or many other things. Sounds more serious than that. - Tim "Sie" wrote in message .. . My problem did not ever lye with locked up shutdowns. As far windows was concerned the PC had shutdown successfully and the all powered off including power light apart from fans and HD light which then stuck on. It is however only yesterday that the PC will not switch on at all and only the fans and hd light comes on as soon as I plug the power cable in. If this is a BIOS restart setting then how do I reset it? Thanks Sie "Tim" wrote in message ... I agree with Mr Goat. There are several programs around that can be configured to shutdown when they have finished doing what they have to do. You current problem (may be separate and coincidental) may be the result of Power Fail / Restart settings in the bios. I forget the settings but basically the intent is if you have a UPS and the power goes off without a tidy shutdown, then one of the settings is to automatically power on when AC is restored so that the UPS can restart the system automatically. May be not... - Tim "Rivergoat" wrote in message ... Have you recently installed any programs? I just built a PC on that same mobo and it took me over 3 weeks to solve the same kind of problem. Turned out to be an HP backup program; once removed all is well. Then the other night I was testing some wma-mp3 converter utilities and found that program also left the PC up, although I could soft off from the keyboard (something that didn't work with regards to the HP glitch). I also removed that program and all is well again. Not sure if it's an ASUS thing or what; I've run into shut down issues on 2 different models of ASUS mobos..... |
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