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Motherboard/CPU blown? PC wont start anymore
I have recently put together a new computer and for the last week it has been running fine, but last night it shut off suddenly and it wont turn on anymore.
The system is a:
- GA K8NSC S939 Motherboard
- AMD Athlon 3200+ S939
- 512MB Kingston DDR RAM
- Western Digital 160GB SATA HDD
LAst night i had just plugged in the front USB ports into the motherboard and inserted a DVD burner as well. when i booted up the computer i had opened Nero and plugged in the USB key via the front ports. the USB device had been recognised but then nothing happened after that. I had then placed a blank DVD into my burner and then the entire system just shut off about 15-20 after that...
Now the system will not turn on anymore. I have swapped the power supply over and tried another one and it didnt start. I used the P/S from the pc in another computer and started fine. So the power supply was not the problem.
I swapped the RAM and HDD and removed the DVD from the m/b and still no responce.
I cant smell anything burnt but i have a feeling that the Motherboard might have blown or the CPU...I can figure out which one...ANd if they have blown how did it happen.....
I thought maybe the USB key might have short circuited the m/b due to an improper pin configuration but i double chedcked the USB pins and they were in correct. The p/s in the case that i was using is only about 5months old and not really used that much. I bought it as a spare case, but i am weiry that it might have been the p/s.
Input would be greatly appreciated
The system is a:
- GA K8NSC S939 Motherboard
- AMD Athlon 3200+ S939
- 512MB Kingston DDR RAM
- Western Digital 160GB SATA HDD
LAst night i had just plugged in the front USB ports into the motherboard and inserted a DVD burner as well. when i booted up the computer i had opened Nero and plugged in the USB key via the front ports. the USB device had been recognised but then nothing happened after that. I had then placed a blank DVD into my burner and then the entire system just shut off about 15-20 after that...
Now the system will not turn on anymore. I have swapped the power supply over and tried another one and it didnt start. I used the P/S from the pc in another computer and started fine. So the power supply was not the problem.
I swapped the RAM and HDD and removed the DVD from the m/b and still no responce.
I cant smell anything burnt but i have a feeling that the Motherboard might have blown or the CPU...I can figure out which one...ANd if they have blown how did it happen.....
I thought maybe the USB key might have short circuited the m/b due to an improper pin configuration but i double chedcked the USB pins and they were in correct. The p/s in the case that i was using is only about 5months old and not really used that much. I bought it as a spare case, but i am weiry that it might have been the p/s.
Input would be greatly appreciated
take the board out of the case reset bios and try bootingo without input devices (hd,cdrom,fdd...) just bord cpu mem and vga.
ASKER
Would the bios prevent the pc from starting up???
ASKER
i had a go and no good.....There isnt a way to tell what the problem is unless i have another cpu & m/b (same chipset) and swap the parts and check is there.....
>> Would the bios prevent the pc from starting up??? << yes it can. i have had personally a case where a flat bios battery caused it . BTW - it should read 3 V.
what happens if you take the RAM out ? in fact, remove everything but moco, cpu and video.
what happens if you take the RAM out ? in fact, remove everything but moco, cpu and video.
One of the frist things I find it helpful to check, is to make sure that the motherboard is getting power. Most newer mother boards have an LED physcially on the mother board that is lit when ever the MB has power. If the mother board is getting power; trshorting the CMOS battery, I have seen cases where a loose expansion card or memory module will prevent the post; or even the machine powering up at all.
>> trshorting the CMOS battery << do not short the battery ! it will be flat in 1 sec
What i normally do in a case where nothing works is to gut the system i.e. Take every thing out and start it on the desk ( wodden or plastic covered, don't want a metal desk)
Start with the power, cpu, video, memory and mobo speaker.
If nothing on screen and no beep, try using the clear cmos jumper to clear the bios incase any safetys kicked in.
If that is done and still nothing, take out the memory and see if you hear some constant beeping.
If nothing, it may be a problem with the cpu or mobo.
I have had cpus fried in about a second on motherboards that don't have a safety in for cpu temp, by simply forgeting to plug in the fan after doing something.
Open the powersupply and look for the fuse to see if its blown, or any capicitors that seem to have a concave shape to the top, or any liquid seeping out of them as an indicator.
It is fairly difficult to blow an mb. more likely the cpu or a stray wire dangling and grounding off and blowing the powersuply
Start with the power, cpu, video, memory and mobo speaker.
If nothing on screen and no beep, try using the clear cmos jumper to clear the bios incase any safetys kicked in.
If that is done and still nothing, take out the memory and see if you hear some constant beeping.
If nothing, it may be a problem with the cpu or mobo.
I have had cpus fried in about a second on motherboards that don't have a safety in for cpu temp, by simply forgeting to plug in the fan after doing something.
Open the powersupply and look for the fuse to see if its blown, or any capicitors that seem to have a concave shape to the top, or any liquid seeping out of them as an indicator.
It is fairly difficult to blow an mb. more likely the cpu or a stray wire dangling and grounding off and blowing the powersuply
When I refered to shorting the CMOS battery, I appologize for not being more clear. There are typically a set of 3 pins next to the CMOS Mattery, with a jumper on two of them. Move the jumper to over 1 pin, and wait 10 seconds, then move the jumper back.
I appologize for any confusion.
- Daniel
I appologize for any confusion.
- Daniel
ASKER
I have changed the jumper settings on the pc and still no good. The p/s isnt the problem because i ahve tested in in a another computer and it worked fine.
In regards to power going through the motherboard id ont think there is. Because when i had the power plugged in the the motherboard wasnt lit either..
I will double check to see if any exp[ansion cards are slughtly loose..However with the motherboard LED not lit that is telling me that its the m/b that is the problem.....
In regards to power going through the motherboard id ont think there is. Because when i had the power plugged in the the motherboard wasnt lit either..
I will double check to see if any exp[ansion cards are slughtly loose..However with the motherboard LED not lit that is telling me that its the m/b that is the problem.....
Well that narrows it down to m/b or powersupply.
There are typically a set of 3 pins next to the CMOS battery -- this is the jumper for the cmos reset /clear.
did you try my last suggestion? without ram ?
did you try my last suggestion? without ram ?
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ASKER
i cant beleive it..........i had a good feeling it was the m/b...but i had no idea the history behind this model....i wish i had known....from what i had heard it was a good solid board with great reliability.....
....crap!
Thank you very much for the backround about this model.....
....crap!
Thank you very much for the backround about this model.....
Sure. You're welcome. I'm sorry it came to this. If it helps, there's practically no chance any of your other hardware was damaged.
ASKER
Ohh excellent you had me worried there
Great. Good luck with your new setup.