[Rub8322]

my computer (costume build) wont turn on, all fans including the processor's turn on but the computer never goes into windows. i tried different ways to check what went bad, i removed the video card from the motherboard...and it doesnt turn on. i tried removing the memory sticks (four of them, 3200 totaling 3gb) and testing/turning on one by one, and still got same result. i tried replacing the power supply (500wat) with another 500 wats but still same result. is there anything else i can check to see if it is the motherboard that went bad. i am using a borrowed laptop at the moment but have to return it soon, so i would like to find out if i should buy a motherboard or not, or whatever it is that its causing this problem. any other information i can give that i may be missing, let me. thanks in advance

[Match]

Hi Rub

checked the graphics
checked the ram
checked the power supply

I assume that its not posting, so this would make me think that it is infact the Motherboard.

However you say its custom built, has it ever worked?

If not have you checked that all the connections from the PSU to The Mobo are plugged in correctly with no bent broken or missing pins

Have you checked that any jumper pins on your Mobo are set right, or missing

[Dalo Harkin]

Have you popped the CMOS battery - or used the jumper to reset the BIOS settings - as you are getting no image on screen - have you tried another monitor?

[DirtyPolo]

As Match has asked, has it ever worked? If not, what components are in this custom built machine Rub?

[Rub8322]

Match said:

Hi Rub

checked the graphics
checked the ram
checked the power supply

I assume that its not posting, so this would make me think that it is infact the Motherboard.

However you say its custom built, has it ever worked?

If not have you checked that all the connections from the PSU to The Mobo are plugged in correctly with no bent broken or missing pins

Have you checked that any jumper pins on your Mobo are set right, or missing

it has worked before, i check all pins and they are ok, i have one concern though, i read an article that if i just have the PSU and motherboard connected and nothing else, i am able to know the PSU works by plugging the power cord and the moment i turn on the switch behind the PSU, the fan should blow air, not necessarily trying to turn on the computer using the button in the front face. if this is true then my PSU is not good because i plugged the power cord, turn the switch and no air came out. what do you guys think

Dalo Harkin said:

Have you popped the CMOS battery - or used the jumper to reset the BIOS settings - as you are getting no image on screen - have you tried another monitor?

i am 100 percent sure the monitor work, now i did pop the cmos batter out and placed it back in but i didnt do anything about a jumper, how does this work.

DirtyPolo said:

As Match has asked, has it ever worked? If not, what components are in this custom built machine Rub?

i have asus-sli mother board, amd 3700+ processor, 500wat PSU, 3gb ram PC3200, and a nvidia video card, so basically its not the lasted of parts, but yes..they did work before.

[DirtyPolo]

Dont worry about the jumper, it's just another way of replacing the CMOS battery.

Going by the fact you ahve tired and tested each part of your PC, except the mobo, that seems to me as the likely cause of the problem.

As for your statement about testing your PSU, you said you have tried another one? if you got no better rersults then it cannot be your PSU unless for some odd reason both of them are dead.

I would wait for the others to reply with their conclusions aswell, don't just take my result incase I have missed something :P

[Match]

Quote

i am able to know the PSU works by plugging the power cord and the moment i turn on the switch behind the PSU, the fan should blow air, not necessarily trying to turn on the computer using the button in the front face

OK never heard of this nor tried it but applying logic of working systems, the psu doesn't power up the fans till the power button on the front face is turned on??

you say that it was working, can you tell us what happened or you did directly before it stopped working.

when you tried the other PSU did the fans on the PSU work

I have a strange feeling that this might be related to the power button on the front face, do you have an AVO meter or something you can use to check its working, resistance, 1.5v bulb & battery, spare switch?

[Rub8322]

Match said:

OK never heard of this nor tried it but applying logic of working systems, the psu doesn't power up the fans till the power button on the front face is turned on??

you say that it was working, can you tell us what happened or you did directly before it stopped working.

when you tried the other PSU did the fans on the PSU work

I have a strange feeling that this might be related to the power button on the front face, do you have an AVO meter or something you can use to check its working, resistance, 1.5v bulb & battery, spare switch?

both PSU might be working fine for all i know, i am just assuming they might be bad from what i read in the article online. when i plug the power cable into the PSU and turn the switch on the pc turns on without me having to press the front face button. (this is something new that is happening recently) it may be an effect of me turning it on/off so many times having to test all hardwares. also, i dont have a avo meter. :-/

[Match]

OK you say that it now turns on?

is that turns on lights up Motherboard LED's and fans turn on. without having to press the front panel power button?

if so

Basically it looks like two probables one the front power button, my favourite, or wiring to it check for breaks or wear on the outer casing where it touches parts of the case.

£5 to source a new one in the uk from maplins

or it is your motherboard (A8N32? Guess from Asus Sli & CPU)

But if I were you I'd try the Switch first it's cheaper especially if you can get one out of an old pc from somewhere (Momentary Action Foot Switch)

[Rub8322]

Match said:

OK you say that it now turns on?

is that turns on lights up Motherboard LED's and fans turn on. without having to press the front panel power button?

if so

Basically it looks like two probables one the front power button, my favourite, or wiring to it check for breaks or wear on the outer casing where it touches parts of the case.

£5 to source a new one in the uk from maplins

or it is your motherboard (A8N32? Guess from Asus Sli & CPU)

But if I were you I'd try the Switch first it's cheaper especially if you can get one out of an old pc from somewhere (Momentary Action Foot Switch)

it has always turned on, and by this i mean all fans and PSU, now it turns on by itself as soon as i turn the switch on the PSU. i have an RX-9 case i dont know if this will help but just throwing it out there, and my motherboard is A8AE-LE i thought i had the sli one but no this is from another pc i had (HP).

[Match]

It's definatly sounding like a Motherboard problem,

Its powering up so it's not the PSU.

the PSU connects to the Motherboard and the Motherboard should control the PSU, so that the fans and everything only power up when the front panel switch is closed, and then when its shut down it should turn them off, just leaving the power LED on(Motherboard one that is).

So I would source a replacement motherboard, and then try it.

let us know how you get on, please, we like feed back,