Gigabyte B450 System Won't Boot

Status
Not open for further replies.
B

BCW100

Member
Hi,

My PC Specialist system (spec below) has been working fine since I first set it up two years ago, with no modifications to the configuration, until this morning. It worked fine last night, but today when I went to switch it on, while the power light came on and I could hear fans starting etc. it failed to start the boot process (no beep, no display etc.). I can see LEDs coming on on the Motherboard, so there is power somewhere, but I am at a loss as to what has happened. Any ideas would be most welcome.

Case COOLERMASTER SILENCIO S600 QUIET MID TOWER CASE
Processor (CPU) AMD Ryzen 7 3700X Eight Core CPU (3.6GHz-4.4GHz/36MB CACHE/AM4)
Motherboard Gigabyte B450 AORUS ELITE: DDR4, USB 3.1 - RGB Ready
Memory (RAM) 16GB Corsair VENGEANCE DDR4 2400MHz (1 x 16GB)
Graphics Card 4GB NVIDIA GEFORCE GTX 1650 SUPER - HDMI
1st Storage Drive 2TB SEAGATE BARRACUDA SATA-III 3.5" HDD, 6GB/s, 7200RPM, 256MB CACHE
1st M.2 SSD Drive 256GB PCS PCIe M.2 SSD (1900 MB/R, 1100 MB/W)
2nd M.2 SSD Drive 512GB ADATA SX6000 Pro PCIe M.2 2280 (2100 MB/R, 1500 MB/W)
DVD/BLU-RAY Drive 16x BLU-RAY WRITER DRIVE, 16x DVD ±R/±RW & SOFTWARE
Power Supply CORSAIR 550W TXm SERIES™ SEMI-MODULAR 80 PLUS® GOLD, ULTRA QUIET
Power Cable 1 x 1 Metre UK Power Cable (Kettle Lead)
Processor Cooling Noctua NH-U14S Ultra Quiet Performance CPU Cooler
Thermal Paste STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
Sound Card ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Wireless/Wired Networking WIRELESS 802.11N 300Mbps/2.4GHz PCI-E CARD
USB/Thunderbolt Options MIN. 2 x USB 3.0 & 2 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS
 
B4zookaw

B4zookaw

VALUED CONTRIBUTOR
Are the LEDs the error LEDs (see pic below for location)? If so which one is lit?
1646084232393.png


Any beeps from system as you boot?
 
B

BCW100

Member
Many thanks for coming back to me on this. No there are no beeps. Having watched what happens, the CPU LED lights up red then goes out, the DRAM LED immediately then lights red and the goes out, followed immediately again by the VGA LED lighting red. This stays illuminated and the BOOT LED never lights up. When I power down, one of the LEDs (I am not sure which one) flashes amber.

It all seems pretty catastrophic to me, but hopefully it is a simple problem to solve
 
B4zookaw

B4zookaw

VALUED CONTRIBUTOR
Possible issue with graphics card. Have you checked all cables are connected fully, power cables to card inserted, GPU seated correctly? You could try removing card and reseating it.
 
B

BCW100

Member
I can see where you are coming from. Sadly, I have tried as suggested, and also tried removing the card completely to see if it would revert to the in built graphics, but in both cases the same light sequence is seen, and there is no beep.

I am getting quite worried now that this could be a major motherboard issue.
 
SpyderTracks

SpyderTracks

We love you Ukraine
BCW100 said:
I can see where you are coming from. Sadly, I have tried as suggested, and also tried removing the card completely to see if it would revert to the in built graphics, but in both cases the same light sequence is seen, and there is no beep.

I am getting quite worried now that this could be a major motherboard issue.
Click to expand...
That CPU doesnt have built in graphics.
 
Scott

Scott

Behold The Ford Mondeo
Moderator
Unfortunately you don't have on-board graphics to work with here. Best bet is to try and get a different GPU and try it (2nd hand or borrow from a friend/system). That way you can narrow down if the fault is motherboard/GPU/RAM etc.

There are a number of checks to do but firstly you need a known working GPU.
 
B

BCW100

Member
The only graphics card I had to hand was a 10 year old GT520, I have tried that and there is no change in behaviour.
 
Scott

Scott

Behold The Ford Mondeo
Moderator
That's possibly good news, in that the GPU tends to be more expensive than most other potential faults.

Next thing to try is taking out the RAM. Take it out, give it a gentle clean down the pins, then re-seat it.
 
Scott

Scott

Behold The Ford Mondeo
Moderator
If it were my system I would systematically work my way through each of the power connectors, disconnecting and connecting them.

You're now down to 4 likely suspects:

CPU - very difficult to assess and much more advanced to strip down and re-seat. I wouldn't advise this and would contact PCS if nothing else works.

Motherboard - Similar to above, you're not going to be able to fully test this without being able to use known good parts as interfaces. PCS would be the best course.

PSU - I think this is very unlikely to be the cause. It could be one of the power phases though so can't be ruled out. I would probably try a different PCIe power cable just to rule that out, but can't really go much further here. This would be a PCS investigation also.

Loose cable/connection - This is all that's left that you could have a go with on your own.

If none of that works, it's likely something is very broken unfortunately.

Just for a quick test. Can you take out the RAM and turn the PC on and confirm that it stops at the RAM light, rather than the GPU one?
 
B

BCW100

Member
Yes, without the RAM installed the power on stops on the RAM LED (though there is a bit of flipping back an forward between that and the CPU LED).

I have already logged a tech support call with PCS and will refer them to this thread.

Many thanks for all the help, really appreciate it.
 
B

BCW100

Member
One final question. There is a lot of mention in various internet advice on clearing the CMOS by removing and re-seating the CMOS battery. I assume there is no point in looking at this on the basis that the machine never gets to loading the BIOS?
 
Scott

Scott

Behold The Ford Mondeo
Moderator
I would be very surprised if clearing the BIOS would do anything, but for belt and braces it is worth a try. It's one of those "Switch it off, switch it on again" type instructions when you call for help, first port of call. The main reason is that it's easy to mess something up with the BIOS and anyone on the call would want to be sure that the defaults were present, Standard protocol really.

I'm much more naive in that I take people at face value when they say they haven't touched the BIOS so I just skip that step :D
 
B

BCW100

Member
I eventually heard back from PCS. They suggested trying in turn to disconnect the HDD, SDD and M2 drive. Sadly this had no impact.

I haven't tried the CMOS reset, I have no faith that it would work and to be honest I can't see how to remove the battery without breaking something.
 
steaky360

steaky360

Moderator
Moderator
BCW100 said:
I eventually heard back from PCS. They suggested trying in turn to disconnect the HDD, SDD and M2 drive. Sadly this had no impact.

I haven't tried the CMOS reset, I have no faith that it would work and to be honest I can't see how to remove the battery without breaking something.
Click to expand...
Firstly, if you're not confident doing it yourself, get PCS to arrange a RMA, ultimately, this is what your warranty is for. Don't feel that you 'need' to do anything yourself that you're not comfortable with.

That said, its not too difficult, to remove the battery I'd suggest removing the GPU and possibly the wifi card first so that you've got more room to work with. Once you've done that, you should be able to reach in easily enough and depress the little metal catch that holds the battery in place. Else you can bridge the two CLR CMOS pins (at the bottom right of the mobo).

1646281665943.png


Video below showing the steps:

 
Status
Not open for further replies.
Top