Jump to content
Search In
  • More options...
Find results that contain...
Find results in...

CPU light is on indicating failure but PC works

Zalosath
 Share

Go to solution Solved by IkeaGnome,
8 hours ago, Zalosath said:

UPDATE: BIOS only needs reflashing if I unplug and replug the power cable.

Just for shits and giggles, try a new CMOS battery. CR2032 if you have one laying around. If either of those motherboards are old, there's a chance it's dead. When BIOS does weird stuff that's usually what I look at first. 

Hi,

 

I'm working on a PC right now and I've got an issue with the CPU debug light being constantly on. 

 

The PC will turn on normally (but will still have the CPU debug light on), I ran a Cinebench test and all looked good. 

 

The important part though: More often than not the PC will not boot, the fans spin and the CPU light is on, to get it to boot again I have to reflash the BIOS.

 

I've updated the BIOS to support 5000 series.

 

MBD: B450 Tomahawk Max II

CPU: Ryzen 7 5800x

Cooler: NZXT KRAKEN X53

GPU: GTX 970

RAM: Corsair LPX ~2666MHz

 

The PC recently stopped working, so I upgraded the motherboard from a B450 DS3H to a B450 Tomahawk Max II, still wasn't working so tried the CPU in my machine and viola, CPU is broken. So I upgraded that too from a 2700 to a 5800x. 

 

Not sure what's causing this, any ideas?

 

UPDATE: BIOS only needs reflashing if I unplug and replug the power cable.

 

CPU AMD Ryzen 9 3900X  CPU Cooler Corsair H150i PRO  GPU NVIDIA 3090 Founders Edition  MBD MSI MPG X570 GAMING EDGE WIFI  Memory Corsair Vengeance RGB Pro 32GB (4x8GB)  Case Lian Li PC-O11 Dynamic  PSU Corsair RMx 850W 80+ Gold Fully Modular  Monitors Samsung LU32J590UQUXEN 32" 4K, LG 34WN750-B 34" UltraWide QHD IPS   Keyboard Razer Huntsman Elite  Mouse Razer Viper Ultimate  Headphones Sony WH-1000X M3  Microphone Shure SM7B w/ Cloudlifter & GoXLR


Laptop Razer Blade 15 (2019) 15.6" 4k 512GB NVMe

Link to comment
Share on other sites

Link to post
Share on other sites

When it does boot correctly, have you made sure to get the latest chipset drivers, etc?

Ryzen 9 5900x | ROG Crosshair VIII Dark Hero | RTX 3080 FTW3 Ultra | H150i Elite | T-Force XTREEM 3600mhz CL14Corsair 5000D Airflow

Link to comment
Share on other sites

Link to post
Share on other sites

8 hours ago, Zalosath said:

UPDATE: BIOS only needs reflashing if I unplug and replug the power cable.

Just for shits and giggles, try a new CMOS battery. CR2032 if you have one laying around. If either of those motherboards are old, there's a chance it's dead. When BIOS does weird stuff that's usually what I look at first. 

I'm not actually trying to be as grumpy as it seems.

Project Hot Box

CPU 12900k, Motherboard Gigabyte Aero G, RAM CORSAIR Vengeance LPX 32GB 3200mhz (2x16), GPU AMD Radeon 6800 XT FE, Case Lian Li O11 Dynamic Mini, Storage Sabrent Rocket Q4 2tbCORSAIR Force Series MP510 1920GB NVMe, CORSAIR FORCE Series MP510 960GB NVMe, PSU CORSAIR sf600, Cooling Noctua NH-D15, Displays Odyssey G9, LG 34UC98-W 34-Inch,Keyboard Corsair K95, Mouse Corsair Nightblade, Sound AT2035, Scarlett Solo, Massdrop 6xx headphones, Schiit Magni, Modi Loki mini stack. 

Oppbevaring

CPU i9-9900k, Motherboard, ASUS Rog Maximus Code XI, RAM, 48GB Corsair Vengeance LPX 32GB 3200 mhz (2x16)+(2x8) GPU Asus ROG Strix 2070 8gb, PNY 1080, Nvidia 1080, MSI 1070 Gaming X 8gb, Case Phanteks Enthoo Evolv X, 2x Storage Samsung 860 Evo 500 GB, 5x Seagate IronWolf 8tb NAS(ZFS1), PSU Corsair RM1000x, Cooling Asus Rog Ryuo 240 with Noctua NF-12 fans, OS Unraid

 

Why is the 5800x so hot?

 

 

Link to comment
Share on other sites

Link to post
Share on other sites

12 hours ago, TeamBeasted said:

When it does boot correctly, have you made sure to get the latest chipset drivers, etc?

Yeah updated to latest for the board. Only boots correctly when I reflash the BIOS. But I'll only have to reflash it if the power cable is unplugged.

 

12 hours ago, IkeaGnome said:

Just for shits and giggles, try a new CMOS battery. CR2032 if you have one laying around. If either of those motherboards are old, there's a chance it's dead. When BIOS does weird stuff that's usually what I look at first. 

Probably worth a try, though the Tomahawk II is new from Amazon.

CPU AMD Ryzen 9 3900X  CPU Cooler Corsair H150i PRO  GPU NVIDIA 3090 Founders Edition  MBD MSI MPG X570 GAMING EDGE WIFI  Memory Corsair Vengeance RGB Pro 32GB (4x8GB)  Case Lian Li PC-O11 Dynamic  PSU Corsair RMx 850W 80+ Gold Fully Modular  Monitors Samsung LU32J590UQUXEN 32" 4K, LG 34WN750-B 34" UltraWide QHD IPS   Keyboard Razer Huntsman Elite  Mouse Razer Viper Ultimate  Headphones Sony WH-1000X M3  Microphone Shure SM7B w/ Cloudlifter & GoXLR


Laptop Razer Blade 15 (2019) 15.6" 4k 512GB NVMe

Link to comment
Share on other sites

Link to post
Share on other sites

12 minutes ago, Zalosath said:

Yeah updated to latest for the board. Only boots correctly when I reflash the BIOS. But I'll only have to reflash it if the power cable is unplugged.

 

Probably worth a try, though the Tomahawk II is new from Amazon.

Seriously, that don't mean shit because a battery can get weak or die just from sitting on the shelf and it's the same with it sitting in a board ..... On a shelf in the warehouse.

If you have a voltmeter, you can see where the voltage is for the battery and if it's at or below 2.9v's, replace and be done with it.
Normally a new 2032 or any like it has 3.0v's when new, some a touch more and as long as your battery is at or close to 3.0v it's fine.

Link to comment
Share on other sites

Link to post
Share on other sites

2 hours ago, Zalosath said:

Yeah updated to latest for the board. Only boots correctly when I reflash the BIOS. But I'll only have to reflash it if the power cable is unplugged.

 

Probably worth a try, though the Tomahawk II is new from Amazon.

There's a chance the board is faulty right from the production floor. Could always RMA it. 

Ryzen 9 5900x | ROG Crosshair VIII Dark Hero | RTX 3080 FTW3 Ultra | H150i Elite | T-Force XTREEM 3600mhz CL14Corsair 5000D Airflow

Link to comment
Share on other sites

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share


×