I have, right from the start, maybe that is why I found it so stable
Help problem solving PC that won't boot please
- Thread starter Drewb
- Start date
Thanks - it's always useful to know if/which solution resolved an issue. Best of luck.
No problem.
Ok, still having problems but since the bios update it's changed.
It still doesn't boot up to the bios screen but it does stay powered on. All fans are running, the mobo led code shows 00, perhaps more interesting, the CPU led on the mobo flashes on for a second off for 12 seconds, this cycle repeats until I hold the power switch to power off.
Sometimes it boots, I can tell instantly when it will because the led codes cycle instantly and rapidly through various codes.
I now have no USB devices except the keyboard widget and that is now directly off the mobo via a USB extension, it used to be on front panel USB2. I have been powering up using the mobo switch rather than case but haven't disconnected the front panel switch,audio or USB 2 & 3 cables from the mobo. I was going to try this but spotted the CPU led and thought this significant.
What do you think Plec?
It still doesn't boot up to the bios screen but it does stay powered on. All fans are running, the mobo led code shows 00, perhaps more interesting, the CPU led on the mobo flashes on for a second off for 12 seconds, this cycle repeats until I hold the power switch to power off.
Sometimes it boots, I can tell instantly when it will because the led codes cycle instantly and rapidly through various codes.
I now have no USB devices except the keyboard widget and that is now directly off the mobo via a USB extension, it used to be on front panel USB2. I have been powering up using the mobo switch rather than case but haven't disconnected the front panel switch,audio or USB 2 & 3 cables from the mobo. I was going to try this but spotted the CPU led and thought this significant.
What do you think Plec?
Did you clear the CMOS after the BIOS update? And reapply your settings?
Did you reapply your settings after the BIOS update, even if you didn't reset?
Ref:
Sorry no I thought the bios update implied clearing CMOS. I didn't reapply my settings as there wasn't anything to do. I generally only reset boot order anyway. I don't use any of the clocking settings.
Can I clear CMOS without powering up? Is there a jumper maybe?
Can I clear CMOS without powering up? Is there a jumper maybe?
You clear the CMOS with the system powered down, unplugged ideally and fully depleted of power - i.e. pressing the power button once unplugged/off. But if getting your machine unplugged is difficult for you don't concern yourself with this.
And yes, a BIOS update does reset the CMOS - but it's best practice to reset the CMOS straight after, especially if you start experiencing problems.
Have you delved under yet?
Ignore - we did all that already.
Hi, just going to butt in here as it isn't clear whether you actually unplugged all the case I/O leads (USB, audio, PWR, RESET, HDD LED, anything else) from the motherboard. Still need to rule that out, otherwise. That these cables are in one piece or connected properly isn't everything - need to see whether any improvement with all these cables detached.
It would be useful to know but realise this is probably a very tiring troubleshooting method for you.
Before you do this - when you were routing around the case reseating cables did you notice any slight motherboard movement?
Could be anything - we're getting close to stripping all none essentials from the motherboard - but again will have to be guided by you. Ideally, if we get no luck from removing case leads and even none essential leads to the motherboard - we would next be considering building it outside of the case on a piece of cardboard.
*Plus replacing the motherboard battery seems to be a solid move too - even with the boards relatively young age.
So, you've cleared the CMOS and removed all the front panel header leads?
How did you try to switch it on? (just clarifying?)