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#1
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help! Only the LED on mobo is on but could not boot
Hi guys,
I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? Thanks! Berc |
#2
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"rc" wrote in message ... Hi guys, I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? What power button are you using to turn it on? LED on mainboard should (usually) be on whenever the PC is plugged into the wall and PSU turned on, whether or not the PC is turned on. Bad power supply would be my first guess... You don't mention a video card, yet you say there's nothing on the monitor. Obviously you haven't told us everything yet. Try PSU, mainboard, CPU & heatsink, video card and memory ... NOT in the case and nothing else attached. |
#3
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I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? When you say powered on the PC , I might assume that you turned on the power supply. The ATX computers will have a switch on the case that you must press that shorts two pins on the motherboard while the switch is pressed. Did you install this connector correctly ? The power sypply is not normally turned off but supplies a small ammount of power to the motehrboard to detect this switch and also so the keyboard or mouse can be used to turn the system on. |
#4
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"Phrederick" дÈëÏûÏ¢ÐÂÎÅ
:YI8Ab.568815$6C4.75827@pd7tw1no... "rc" wrote in message ... Hi guys, I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? What power button are you using to turn it on? LED on mainboard should (usually) be on whenever the PC is plugged into the wall and PSU turned on, whether or not the PC is turned on. Bad power supply would be my first guess... You don't mention a video card, yet you say there's nothing on the monitor. Obviously you haven't told us everything yet. Try PSU, mainboard, CPU & heatsink, video card and memory ... NOT in the case and nothing else attached. Hi, Actually now the problem seems that the psu is on but the power of the case does not do anything. I push the power butten on and the motherboard led is on. And when I push the power of case on, nothing happened. The case is ANTEC sonata and the psu is also from antec, 380w. Seems not a bad brand. Vedio card is attached, it's a Sapphare ATi 9600 256MB one. The memory is two 512 twinmos PC 3200. Which locate in two A slot on the motherboard. I have unplugged everything and plug them back again to have a try, but still. :-(. Anyway, there is one guess is about keyboard. Since now I have not attached a keyboard with the computer (I am looking for a normal PS2 one, only a wireless one with me now.) I will see what will happened after that althought I don't believe the problem is coming from keyboard. Thanks for your advice! |
#5
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"Ralph Mowery" дÈëÏûÏ¢ÐÂÎÅ
... I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? When you say powered on the PC , I might assume that you turned on the power supply. The ATX computers will have a switch on the case that you must press that shorts two pins on the motherboard while the switch is pressed. Did you install this connector correctly ? The power sypply is not normally turned off but supplies a small ammount of power to the motehrboard to detect this switch and also so the keyboard or mouse can be used to turn the system on. Hi, When the power of psu is on , the LED is on. And then I push the power of the frant panel to start the pc, but nothing happened . That's the situation. I have trid with the pw switch line which connect between the power butten on the front panel and the slot on the mainboard wich diffrent position.(I mean positive and negative lines). Actuall this is also the problem I thought. But after I tried several times with that, I think maybe it is not the case. Or, the connection is broken. Since the case is not a bad one, in this moment I would assume the connection is ok. |
#6
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Take the Power Switch connector off the mother board. Replace it with the
reset switch connector. Push the reset switch and see if it comes on. This should eliminate the Power Switch as a possible problem. If it comes on, the power switch is bad. "rc" wrote in message ... "Ralph Mowery" дÈëÏûÏ¢ÐÂÎÅ ... I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? When you say powered on the PC , I might assume that you turned on the power supply. The ATX computers will have a switch on the case that you must press that shorts two pins on the motherboard while the switch is pressed. Did you install this connector correctly ? The power sypply is not normally turned off but supplies a small ammount of power to the motehrboard to detect this switch and also so the keyboard or mouse can be used to turn the system on. Hi, When the power of psu is on , the LED is on. And then I push the power of the frant panel to start the pc, but nothing happened . That's the situation. I have trid with the pw switch line which connect between the power butten on the front panel and the slot on the mainboard wich diffrent position.(I mean positive and negative lines). Actuall this is also the problem I thought. But after I tried several times with that, I think maybe it is not the case. Or, the connection is broken. Since the case is not a bad one, in this moment I would assume the connection is ok. |
#7
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"MrB" wrote in message t...
Take the Power Switch connector off the mother board. Replace it with the reset switch connector. Push the reset switch and see if it comes on. This should eliminate the Power Switch as a possible problem. If it comes on, the power switch is bad. "rc" wrote in message ... "Ralph Mowery" дÈëÏûÏ¢ÐÂÎÅ ... I am building a new pc by my own. It is ASUS p4p8000 motherboard and PIV 2.6 FSB 800 CPU, Two 512MB RAM. Now I am facing a problem. When I power on the PC, only the LED on the motherboard is light but there is nother else happened. The CPU and chassis fans are not running, no display on the monitor, even no sound of the cpu and HD. Could anyone give me some hint what is the problem? When you say powered on the PC , I might assume that you turned on the power supply. The ATX computers will have a switch on the case that you must press that shorts two pins on the motherboard while the switch is pressed. Did you install this connector correctly ? The power sypply is not normally turned off but supplies a small ammount of power to the motehrboard to detect this switch and also so the keyboard or mouse can be used to turn the system on. Hi, When the power of psu is on , the LED is on. And then I push the power of the frant panel to start the pc, but nothing happened . That's the situation. I have trid with the pw switch line which connect between the power butten on the front panel and the slot on the mainboard wich diffrent position.(I mean positive and negative lines). Actuall this is also the problem I thought. But after I tried several times with that, I think maybe it is not the case. Or, the connection is broken. Since the case is not a bad one, in this moment I would assume the connection is ok. The power switch is not polarity sensitive it is just like a light switch and does nothing more than close a circuit, so if the if you have placed the connector on the proper pins and the machine does not come on than I would suspect a bad switch or more likely you are not getting the proper voltage from the power supply, or the power supply is not compatible with your new CPU. So maybe bad power supply or not the proper power supply. |
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