Boot issue - Mobo?

[Sir_Loin_Ofsteak]

I'm wondering if someone on here came across this issue; about 6 months ago my 980Ti blew its capacitors. After that I thought I smelled burning from the PSU (this may have been from an outside bonfire fuelled by my concern following the recent hardware failure and not the PSU...). Anyway thankfully it was an EVGA so I got that replaced under warranty just to be safe.

 

Since then (and I think a bit before the PSU replacement though I can't quite remember), I've been finding that my PC won't boot unless I switch the PSU off and on. If I do that, it boots first time, every time. Otherwise it's a lottery. 

 

It started doing it only when the PC went to sleep, but now it also does it from cold.

 

My question: do you guys think it is the mobo/CPU that may be causing this? I suspect maybe the mobo, since I've seen a YouTube video with a guy who had the same and fixed it by replacing the mobo.

 

The board should throw up boot codes, but when it does this, although all the lights light up, nothing else happens (including not showing even a boot error). Also want to note, when it does this it doesn't illuminate the keyboard, so I can tell it won't boot...

 

I tried updating the BIOS, but it didn't help.

 

Specs:

Gigabyte Z170 Gaming 5 

Intel i5 6600k (@stock currently)

Noctua NH-U14

16 GB Corsair Vengeance low profile @2666Mhz 

STRIX 1070

EVGA 650W G2

Samsung Evolution 850

 

Any help appreciated before I start considering a board update...!

[kb5zue]

Could be something as simple as the cmos not remembering your settings.  That could be caused by the cmos battery going dead.  How long has it been since you checked the battery and make sure that it is installed correctly in reference to the polarity of the battery.

[Guest]

If the battery has gone bad, he should have gotten an error message, and an boot pause/break. Which he didn't report. Also, my GF still uses my old pc. The mobo is 11 years old now, and still using it's first battery. So I highly doubt this is the issue @kb5zue.

 

I have seen the same kind of issue you have @ ts, but it started out differently. Sleep mode would be the best thing, and a cold boot would cause issues. I would also like to blame your mobo, and I would look into your BIOS. An update would be the next best thing to do. But you've already done that. But I do want to ask: was it a real update? Or did you do a bios update check. (and that it might not have done a thing, since it was already the latest version?) If it didn't do anything at all, you might want to install an older BIOS version, so you are absolutely sure things have changed. (btw, how did you break that 980ti?)

[kb5zue]

3 minutes ago, Dutch-stoner said:

If the battery has gone bad, he should have gotten an error message, and an boot pause/break. Which he didn't report. Also, my GF still uses my old pc. The mobo is 11 years old now, and still using it's first battery. So I highly doubt this is the issue @kb5zue.

 

I have seen the same kind of issue you have @ ts, but it started out differently. Sleep mode would be the best thing, and a cold boot would cause issues. I would also like to blame your mobo, and I would look into your BIOS. An update would be the next best thing to do. But you've already done that. But I do want to ask: was it a real update? Or did you do a bios update check. (and that it might not have done a thing, since it was already the latest version?) If it didn't do anything at all, you might want to install an older BIOS version, so you are absolutely sure things have changed. (btw, how did you break that 980ti?)

If you had read my post, you would have read that what I said was "Could be something as simple as the cmos not remembering your settings.  That could be caused by the cmos battery going dead".

 

I did not say the battery was the cause, I said that it "could" have been the cause.  There is a difference but you didn't notice that because you were too busy to condemn.

[Guest]

I wasn't bashing and/or condemning anyone. I was just pointing out that the possible issue you mentioned, would be very unlikely. Nothing more/nothing less @kb5zue.

[Sir_Loin_Ofsteak]

@Dutch-stoner Thanks for the input; the 980Ti killed itself while I was playing The Witcher 3; I was in-game and heard a loud bang and the smell of burning plastic, and that was sort of that. I hadn't fiddled with it; it came with a factory overclock (it was an Inno3D, so not a top drawer vendor but they've been in the market a pretty long time and I didn't expect that!).

 

For the BIOS update I downloaded it off their site then launched the update function from a USB drive. It's not running the latest version because I heard *some* Skylake chips don't like the Kabylake BIOS updates, so it's running the penultimate Skylake one (for some reason the latest Skylake BIOS available gave me a checksum error despite me redownloading and trying again so I backed out of the update). I didn't download the update from the BIOS utility, if that's what you meant...

 

@kb5zue - I haven't actually checked the battery, although I'd imagine that if it were that the clock would stop working (before it connects to the internet and syncs) wouldn't it? I haven't changed it, but it's only a couple of years old. I haven't actually tried clearing CMOS, so that's a good idea, I'll give that a go. :-)