new motherboard/psu problems

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davidkunttu

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just recently i bought a new motherboard and a new psu to solve some of my more difficult computer problems. got them both installed and was happy to see something show up on the screen. it only lasted for about half a second however and then the board started making some crazy beeping, alternating high and low beeps that do not end and last about a second each. i cant find anywhere what these beeps mean, i've reseated video and ram, checked processor and i am at a complete loss.

motherboard:
epox ep-8k9a71

psu:
coolmax 450w

also a little note, if i reboot the system nothing shows on the monitor and it goes straight to beeping but if i take out the motherboard battery and let it sit for a couple minutes and then put it back in and reboot it pops the bios on the screen for just a second like the first time. any ideas?
 

etaf

Wayne
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do you know th emake of bios
here is a site to decode the beeps

http://www.bioscentral.com/

also have you got the fan correctly fittrd onto the CPU and not the wrong way round.

there (i cant remember which way round) is a lower ridge along one side of CPU and that matches the fan mounting.
if yu have the fan the wrong way round it does not fit on the cpu correctly -no thermal contact CPU get hot - alarms go and PC switches OFF

are all the components - memory, video etc from old PC compatable with new motherboard
 
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4,168
It is possible that it is detecting a potential heat problem. Is the cpu fans spinning?? Also check as it may be possible that the cpu fan needs to be hooked to the motherboard. Also check the wiring on the switches for startup and reset. It may be something is not wired correctly to the board.
 

davidkunttu

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Apr 22, 2004
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ill check the cpu fan, everything is compatible, ill get a list up here but for now i am only running the motherboard, video, ram and processor
 

davidkunttu

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Apr 22, 2004
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the fan is on right, i dont know what could be the problem, i cant find anything on that beep code list, i have awardbios

i just turned it on again and noticed it said something like, "display switch set incorrectly" so i guess i will try to find that on the board and fix it. any idea where that is?
 

etaf

Wayne
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the fan is on the correct way round - matching the groove
 

crjdriver

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43,063
Some things to check.

1 HSF Pull the board and take a close look at how the fan is mounted. The low area of the hsf must go over the rise on the socket. If it is installed the other way around, it will over heat.

2 Reseat video card

3 Reseat ram

4 Now we will try and get a post outside of the case. This checks your mounting to see if there are any grounds. Place the mb on the box it came in; do not use the anti-static bag. Connect your ps [you most likely will have to pull the ps also], and your monitor to the video card. Have just one ram chip installed. Now find the power switch leads on the mb and short across the two prongs with a small screwdriver.

If it posts now, you will need to check your mounting VERY carefully. If it fails to post now, you will need to swap components with know good units ie ps, cpu, ram, video card.
 

crjdriver

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BTW those are good quality parts. At least you stayed away from ecs / pcchips ect. Coolmax ps are also of good quality.
 

davidkunttu

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Apr 22, 2004
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ok so i took it out and set it up on the box it came in and it did the exact same thing. so i tried a different motherboard i had laying around, a gigabyte ga-7n400, and it gave me the same beeping but no video. i also tried other sticks of ram and a different video card, both of which are brand new. soooo i have no idea what to do now, any ideas?
 

crjdriver

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Have you tried the old ps? I sounds like the only part you have not swapped.
 

davidkunttu

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Apr 22, 2004
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just tried it, same thing.

edit: just a note, i have not tried another processor as i do not have another processor....
 

Triple6

Rob
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Seems it has to be the CPU as you've pretty much ruled everything else out. If you can try for warranty on it.
 

davidkunttu

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Apr 22, 2004
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well i was hoping it wouldnt come to that seeing as i've already spent enough money on this problem as it is, but it's worth a shot...
 
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