Age old Question, CPU or MOBO?

matrimforever · Mar 20, 2016

Hi,

I have 10-12 years of experience with computers which include building them, changing out parts etc.

Today I tried swapping out a 550 watt PSU with a newer 750 watt one. When I did, everything turned back on but I got no video. So I tried reseating the vid card a couple times. I noticed a metallic smell, which I chalked up to the PSU being used for the first time, so didn't think much of it since everything still turned on but video.

To make sure my video card wasn't fried, I put in 2 other cards which also failed to produce video. Panicking, I took out the new PSU and put in the old one back in. Still nothing...

I swapped out the CPU with an older AM2 not even sure what it was, but it fit...still nothing.

So at this point, I'm almost sure its the mobo. But my question is: Why does stuff still work,?The cpu fan which is only attached to the mobo turns on, LED lights are on etc.

My specs:
Mobo: Gigabyte 970a-d3p
CPU: FX-8320

06yfz450ridr · Mar 20, 2016

matrimforever :

Hi,

I have 10-12 years of experience with computers which include building them, changing out parts etc.

Today I tried swapping out a 550 watt PSU with a newer 750 watt one. When I did, everything turned back on but I got no video. So I tried reseating the vid card a couple times. I noticed a metallic smell, which I chalked up to the PSU being used for the first time, so didn't think much of it since everything still turned on but video.

To make sure my video card wasn't fried, I put in 2 other cards which also failed to produce video. Panicking, I took out the new PSU and put in the old one back in. Still nothing...

I swapped out the CPU with an older AM2 not even sure what it was, but it fit...still nothing.

So at this point, I'm almost sure its the mobo. But my question is: Why does stuff still work,?The cpu fan which is only attached to the mobo turns on, LED lights are on etc.

My specs:
Mobo: Gigabyte 970a-d3p
CPU: FX-8320

is the cpu power connector in, I miss that every once and a while , will do the same thing

matrimforever · Mar 20, 2016

If you mean the 12v 8pin connector yes

06yfz450ridr · Mar 20, 2016

you re-seat the ram? or try only one stick at a time? clear the cmos?

matrimforever · Mar 20, 2016

Did all that except clear the CMOS. Not sure how to without jumpers...unless removing the battery does that...in which case I did

.

Is it possible the board couldn't handle that much wattage? I thought it would take up to 1100.

And if I fried it, why is the fan and power LED light on?

06yfz450ridr · Mar 22, 2016

matrimforever :

did you try your ram in another pc?

not the greatest board, you really need a 140w board for the 8 cores.

but there is a jumper on that board.

matrimforever · Mar 22, 2016

I pulled RAM from another workstation and still nothing. I'm assuming when I pulled the battery it cleared the CMOS.

Thanks for the help thus far. Not sure what else to try. Can you fry parts of the board and not others? Would explain why fans are still getting power and either the cpu or gpu parts aren't working? I'm sure now that the smell came from the board and not the psu(well pretty sure, heh).

06yfz450ridr · Mar 23, 2016

yeah sound like the board now unfortunately, grab a decent 990fx board, you can sometimes find them rather cheap when on sale or open box on newegg, I picked up a brand new open box asus sabertooth 990fx r2.0 back in the day for $129

06yfz450ridr · Mar 23, 2016

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131851R

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Age old Question, CPU or MOBO?

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