Question PC only boot after clearing CMOS

[linkref]

Hello

Here is my rig: r5 5600, 3080, 32go, B450m tuf plus ii. All components are new and date from November 2022

For 2 days and for no reason I can no longer boot my pc...
I have to reset the CMOS to turn it on, if I turn it off the next boot will not work until I reset the CMOS again..

Things I tried:

• bio flash
• Replace power supply
• Test the boot with no non-essential elements
• Boot without the CMOS battery
• Change cmos battery with a new one

Do you have any thoughts on the situation?

 

[Koekieezz]

Hello

Here is my rig: r5 5600, 3080, 32go, B450m tuf plus ii. All components are new and date from November 2022

For 2 days and for no reason I can no longer boot my pc...
I have to reset the CMOS to turn it on, if I turn it off the next boot will not work until I reset the CMOS again..

Things I tried:

• bio flash
• Replace power supply
• Test the boot with no non-essential elements
• Boot without the CMOS battery
• Change cmos battery with a new one

Do you have any thoughts on the situation?

try this step by step in order (read till end):

• Make sure you're able to boot to pc, perform a cmos reset first
• Disconnect from internet
• Uninstall every gpu driver using DDU (clean and do not restart, also tick all option in AMD option in the ddu settings before doing so).
• Uninstall all the processors (is a must, should be 12 on yours since it's 12 threads, also when it asks for restart, click on no and keep uninstalling all processors) on device manager like this:
  
  
  
  
  
• Uninstall AMD Chipset Software in control panel (if there is none, skip it.)
  
  
• reboot the PC to bios, disable AMD fTPM and secure boot (if enabled by default), save and exit, go to bios again, reflash the bios to the latest again, go to bios after finished updating, then load default or optimized settings, enable fastest xmp profile and PBO, then save and exit.
  
  Optional: disable CSM, enable Above 4G Decoding and Resizable bar option (these 2 options wont be available unless CSM is disabled).
  
  
• if successful, boot up to windows and install the latest Chipset driver (should be ver 4.11.xx as the time i write this), then reboot.
  
  
• Install latestnvidia driver
  *do this all offline until reboot after installing chipset driver, also you may reboot to bios after all of this to set the XMP (and previous settings you did). Download needed files (highlighted word) before doing step 1, do the step by orders.
  
  
• Run cmd as admin, then do chkdsk /x /f /r, after that do sfc /scannow
  
  
• And check windows update if there is any and install them (except optional update).
  
  
• Make sure the psu connected to the gpu is 1 pcie cable per 1 slot (use main cable, not the branches/split) like this:
  
  

 

[linkref]

Hi,

Thanks for your message but considering the fact that I am tring to boot the pc without any drive, making change into windows does no make any sense.

Thanks anyway

 

[Koekieezz]

Hi,

Thanks for your message but considering the fact that I am tring to boot the pc without any drive, making change into windows does no make any sense.

Thanks anyway

even if it doesnt make sense, you could try it yourself

otherwise, it might be a bios chip failure, or the board cmos battery socket trace to bios chip somehow damaged (thats unlikely), cause last time i have this issue (bios wont save) even replacing cmos battery, it turned out that the bios chip is failing. modern bios chip usually use WSON8 package so you would need hot gun and some solder skills if you want to replace it.