After rebuild, startup not geting to BIOS

[highstream]

Sent a Gigabyte GA-Z97X-UD5H-BK Rev. 1 back on warranty - SATA port problem - and got back a Rev. 2. In the meantime, I picked up a new Thermaltake Suppressor F31 case, a used i7-4790K from a supposedly reliable seller - pins looked good on inspection (replaced a working i5-4690K) - and a couple of new fans. After the rebuild, here's what happens:

- power starts but computer never gets to BIOS (at least on screen)
- cpu fan starts and keeps running
- two of three case fans start but one dies quickly while the other keeps running
- GPU fan starts then stops as it should (silent GPU)
- case power and reset switches and LEDs work as they should
- motherborard debug code starts with 15 - North Bridge pre-memory initialization started - and then settles into code C0, which in the Gigabyte manual shows as unassigned

What I've done:
- checked all connections, unplugging and replugging some, including CPU power on both ends
- reinstalled RAM (4x8gb - all the same model - working fine before rebuild)
- pulled aftermarket sound card to eliminate that variable

Short of starting again, what would you suggest mght be going on and the next troubleshooting step(s)? Thanks,

Setup (other):
- 2 SSDs, one with Win 8.1 x64 Pro
- 4 HDDs for storage and backup
- EVGA GeForce GTX 950 SC+
- Prolimatech Megahalems Rev.C CPU cooler
- Dell U2412M monitor

 

[hang-the-9]

Did you try it with the old working CPU? If not, do that. Also test RAM sticks one at a time. I'd also reset the BIOS on the motherboard with the jumper. You have a bit too many changes there, replaced motherboard and new CPU, could be issue with either one or maybe even with the power supply or RAM.

 

[highstream]

Although I put in the cpu correctly, a few base pins got bent. How does that happen?? In any case, bent pins corresponds to the type of symptoms I reported. I've fixed most, but am not sure about a couple where there seem to be empty spaces. Going to stop by a local shop to have another set of eyes look at it before deciding what to do.

 

[Brandon-]

Sent a Gigabyte GA-Z97X-UD5H-BK Rev. 1 back on warranty - SATA port problem - and got back a Rev. 2. In the meantime, I picked up a new Thermaltake Suppressor F31 case, a used i7-4790K from a supposedly reliable seller - pins looked good on inspection (replaced a working i5-4690K) - and a couple of new fans. After the rebuild, here's what happens:

- power starts but computer never gets to BIOS (at least on screen)
- cpu fan starts and keeps running
- two of three case fans start but one dies quickly while the other keeps running
- GPU fan starts then stops as it should (silent GPU)
- case power and reset switches and LEDs work as they should
- motherborard debug code starts with 15 - North Bridge pre-memory initialization started - and then settles into code C0, which in the Gigabyte manual shows as unassigned

What I've done:
- checked all connections, unplugging and replugging some, including CPU power on both ends
- reinstalled RAM (4x8gb - all the same model - working fine before rebuild)
- pulled aftermarket sound card to eliminate that variable

Short of starting again, what would you suggest mght be going on and the next troubleshooting step(s)? Thanks,

Setup (other):
- 2 SSDs, one with Win 8.1 x64 Pro
- 4 HDDs for storage and backup
- EVGA GeForce GTX 950 SC+
- Prolimatech Megahalems Rev.C CPU cooler
- Dell U2412M monitor

Try clearing CMOS battery, find a screwdriver and touch the battery with it for about 3-5 seconds. Boot up PC, touch battery with screwdriver or flathead for about 3-5 seconds, sometimes just tapping the battery with the screwdriver or flathead will work. Goodluck highstream.

 

[Karsten75]

The proper way to reset or clear the CMOS is NOT to touch the batter with a metal object, but to REMOVE the battery from it's housing. Sometimes there is also a jumper on the motherboard that has to be shifted to different pins while the battery is installed.

Refer to the manual: http://www.gigabyte.com/products/product-page.aspx?pid=4978#manual

 

[Brandon-]

Just a suggestion if he dosen't know how to remove it, dosen't have any jumpers, or can't. There's usually no harm touching it with the end of a screwdriver or a flathead.

 

[Karsten75]

Just a suggestion if he dosen't know how to remove it, dosen't have any jumpers, or can't. There's usually no harm touching it with the end of a screwdriver or a flathead.

 

[highstream]

Since a few pins are bad on the cpu base, and two are actually broken off, and it's likely their absence is harmless, then dealing with the CMOS seems irrelevant. Before pulling things apart, I actually did reset it - there's a button on the board (and battery and jumpers), but it had no effect on the problem. That led me to go all the way back.

 

[Brandon-]

Since a few pins are bad on the cpu base, and two are actually broken off, and it's likely their absence is harmless, then dealing with the CMOS seems irrelevant. Before pulling things apart, I actually did reset it - there's a button on the board (and battery and jumpers), but it had no effect on the problem. That led me to go all the way back.

Ok ok, nice to rule that out. Did you try as hang suggested? To try it with the other CPU? Also, whats your PSU?

 

[Rogue Leader]

Since a few pins are bad on the cpu base, and two are actually broken off, and it's likely their absence is harmless, then dealing with the CMOS seems irrelevant. Before pulling things apart, I actually did reset it - there's a button on the board (and battery and jumpers), but it had no effect on the problem. That led me to go all the way back.

How can you assume their absence is harmless if the system will not POST at all? Even 1 bad pin can cause that.

 

[USAFRet]

Since a few pins are bad on the cpu base, and two are actually broken off, and it's likely their absence is harmless, then dealing with the CMOS seems irrelevant. Before pulling things apart, I actually did reset it - there's a button on the board (and battery and jumpers), but it had no effect on the problem. That led me to go all the way back.

Ok ok, nice to rule that out. Did you try as hang suggested? To try it with the other CPU? Also, whats your PSU?

Bent pins and broken pins?
How does this rule anything out?

Known broken hardware
System not POSTing.

hmmmmmm...I wonder if there is a connection.

 

[highstream]

PSU is Seasonic X650. No, I didn't try the i5 and don't plan to. The i7 came from Silicon Lottery via a seller I have no reason to disbelieve when he says it was working fine before he sent it to me. The way this cpu base reacted to a careful install makes me think Gigabyte sent me a refurb where the pins were already at least "softened up." Rather than fight with them and go through another few weeks - my first board would still be sitting there if I hadn't called after two weeks - better to move on. I have an ASRock x97 Extreme6 board on the way.

 

[highstream]

Since a few pins are bad on the cpu base, and two are actually broken off, and it's likely their absence is harmless, then dealing with the CMOS seems irrelevant. Before pulling things apart, I actually did reset it - there's a button on the board (and battery and jumpers), but it had no effect on the problem. That led me to go all the way back.

How can you assume their absence is harmless if the system will not POST at all? Even 1 bad pin can cause that.

After you saw my post, I reedited that to "unlikely." The sentence doesn't make sense in context with "likely."

 

[Brandon-]

Since a few pins are bad on the cpu base, and two are actually broken off, and it's likely their absence is harmless, then dealing with the CMOS seems irrelevant. Before pulling things apart, I actually did reset it - there's a button on the board (and battery and jumpers), but it had no effect on the problem. That led me to go all the way back.

Ok ok, nice to rule that out. Did you try as hang suggested? To try it with the other CPU? Also, whats your PSU?

Bent pins and broken pins?
How does this rule anything out?

Known broken hardware
System not POSTing.

hmmmmmm...I wonder if there is a connection.

Because he said he tried to reset the CMOS and nothing changed, so I'm guessing its not the battery.

 

[Rogue Leader]

Because he said he tried to reset the CMOS and nothing changed, so I'm guessing its not the battery.

Nope its the broken pins in the CPU socket.

Luckily he didn't try to help the situation by sticking a screwdriver into the battery because that seems like a great idea

 

[logainofhades]

Try clearing CMOS battery, find a screwdriver and touch the battery with it for about 3-5 seconds. Boot up PC, touch battery with screwdriver or flathead for about 3-5 seconds, sometimes just tapping the battery with the screwdriver or flathead will work. Goodluck highstream.

That is a horribly bad idea. You do not touch anything, on the motherboard, when the system is running. Using the CMOS jumper, or removing the battery, with the system off , unplugged, and fully devoid of any power.