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| title | System powers on when pressing the power button, and displays, but does not boot to OS |
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System powers on when pressing the power button, and displays, but does not boot to OS
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| title | Is system display stuck st splash screen? |
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| Is system display stuck st splash screen? | Expand |
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| title | Yes - does the system have any codes unrelated to display being pushed to offboard channel? (see notes below) |
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| Yes - does the system have any codes unrelated to display being pushed to offboard channel? (see notes below) - Check for any POST code displayed in addition to the board manufacturer logo
- Commonly observed codes
- Supermicro - 91 - display pushed to offboard channel
- Tyan - E3/AB - display pushed to offboard channel
- ASUS (on workstation motherboards or back of 2U chassis) - OS loaded properly
- B7/B9 (or B codes) is typically a motherboard component (mostly memory) causing system not to complete POST
- Refer to MFR manual for other uncommon codes
- Most important POST code is where the system gets stuck at
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| title | Yes - please continue to see if system fails to POST due to CPU/Memory/Motherboard |
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| Yes - please continue to see if system fails to POST due to CPU/Memory/Motherboard | Expand |
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| title | Does system power on after re-seating all Memory DIMM's? |
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| Does system POST after re-seating all Memory DIMM's? | Expand |
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| (END) Yes - check topology in BIOS to make sure all installed memory are identified
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| No | Expand |
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| title | CPU/Memory/Motherboard - Does it POST when system is brought down to 1x CPU and 1x Memory DIMM (on primary/first CPU/memory slot)? |
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| CPU/Memory/Motherboard - Does it POST when system is brought down to 1x CPU and 1x Memory DIMM (on primary/first CPU/memory slot)? - If they cannot perform this troubleshooting, they will need to ship this system back to Exxact for further troubleshooting; issue System RMA
- In red, because this is a line whether the hardware diagnostics is more involved/invasive and customers may damage internal components if not handled properly
- See other option to see if they can quickly check if the power button/ribbon cable is the root cause
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| title | Yes - swap CPU to see if issue persists; does system power on after swapping CPU? |
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| Yes - swap CPU to see if issue persists; does system power on after swapping CPU? | Expand |
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| title | (END) - Yes - Defective motherboard/slot; re-install memory and check topology in BIOS for CPU1 to make sure all installed memory are identified |
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| (END) - Yes - Defective motherboard/slot; re-install memory and check topology in BIOS for CPU1 to make sure all installed memory are identified - Could be bad CPU pin/slot on the motherboard on secondary CPU slot
- Ask if they are okay with performing RMA on the chassis+motherboard (honestly if they got this far, I'm sure they can swap the barebone)
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| title | No - swap memory DIMM's; does system power on after swapping through all memory DIMM's that were uninstalled when CPU2 was removed?? |
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| No - swap memory DIMM's; does system power on after swapping through all memory DIMM's that were uninstalled when CPU2 was removed?? - Still could be bad memory, try another memory DIMM to see if issue persists
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| title | (END) Yes - Defective memory DIMM; issue component RMA for Memory |
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| (END) Yes - Defective memory DIMM; issue component RMA for Memory - try to have them re-create issue by re-installing suspected DIMM to see if system fails to power on/POST
- repopulate CPU2 and memory in pairs to ensure the rest of the memory DIMM's are allowing system to POST
- check topology in BIOS to make sure all installed memory are identified
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| title | (END) No - Defective CPU; issue component RMA for CPU |
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| (END) No - Defective CPU; issue component RMA for CPU - Most likely confirmed to be bad CPU since:
- CPU1 slot works
- Installing either of the CPU's into secondary CPU slot does not allow system to power on
- Have them swap the memory DIMM's that were previously installed for CPU2's row into CPU1's to see if all memory is working properly
- System should still be able to power on with 1x CPU and DIMM's but they may lose half the PCI-e slots on certain systems (typically older ones using 2011-v3/v4 CPU's)
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| title | (END) No - Defective motherboard; issue System RMA for confirmation of issue and repairs |
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| (END) No - Defective motherboard; issue System RMA for confirmation of issue and repairs - Could be bad primary CPU1 slot or bad motherboard entirely; issue System RMA for confirmation of issue and repairs
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| title | No(END) No - they are using ports meant for onboard display; make sure any display cables installed to the motherboard (onboard channel) are unplugged and reboot system |
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| (END) No - they are using ports meant for onboard display; make sure any display cables installed to the motherboard (onboard channel) are unplugged and reboot system |
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| title | No - can BIOS be accessed using the 'del' key while system powers on? |
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| No - can BIOS be accessed using the 'del' key while system powers on? | Expand |
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| title | Yes - have you checked boot priority to ensure all installed drives are identified, and that the boot priority is set correctly to use the disks containing the OS? |
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| Yes - does system boot to OS after verifying boot priority is set correctly to first scan the disks containing the OS? - make sure to check all installed drives are identified in the 'boot' tab in BIOS
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| title | No - does OS boot after physically re-seating the drives? |
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| No - does OS boot after physically re-seating the drives?
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| title | No - (if system was set to use offboard orginally) can you get OS if you change primary display setting to 'onboard'? |
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| No - (if system was set to use offboard orginally) can you get OS if you change primary display setting to 'onboard'? | Expand |
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| title | (END) Yes - boots to OS, see next tree related to OS issues |
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| (END) Yes - boots to OS, see next tree related to OS issues |
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| title | No - Does system boot up using another (separate) boot drive installed? |
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| No - Does system boot up using another (separate) boot drive installed? | Expand |
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| title | (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) |
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| (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) - Multiple boot drives and are setup as RAID1 - it is unlikely both drives corrupted at the same time unless the OS/kernel was altered
- escalate to management to have them review scenario or to quote options for drive/OS/SW
- Single boot drive - issue Component RMA
- we need to pre-load the OS/SW at a loss
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| title | (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| title | No - are you receiving any activity lights on the keyboard while system powers on? |
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| No - are you receiving any activity lights on the keyboard while system powers on? - strike 'caps lock' or 'scroll lock' keys to see if the keyboard LED (if applicable) react
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| title | Yes - can system reboot by using 'ctrl+alt+del'? |
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| Yes - can system reboot by using 'ctrl+alt+del'? | Expand |
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| title | Yes - (if stuck at a blank screen after splash screens load) can the OS/kernel selection screen be accessed by using 'up+down arrow keys' after splash screen passes during boot? |
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| Yes - (if stuck at a blank screen after splash screens load) can the OS/kernel selection screen be accessed by using 'up+down arrow keys' after splash screen passes during boot? - Proceed to OS issues tree if able to get to OS/kernel selection screen
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| title | (END) Yes - Proceed to OS issues tree if able to get to OS/kernel selection screen |
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| (END) Yes - Proceed to OS issues tree if able to get to OS/kernel selection screen |
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| title | No - Does system boot up using another (separate) boot drive installed? |
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| No - Does system boot up using another (separate) boot drive installed? | Expand |
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| title | (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) |
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| (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) - Multiple boot drives and are setup as RAID1 - it is unlikely both drives corrupted at the same time unless the OS/kernel was altered
- escalate to management to have them review scenario or to quote options for drive/OS/SW
- Single boot drive - issue Component RMA
- we need to pre-load the OS/SW at a loss
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| title | (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| title | (END) No - Proceed to OS issues tree if able to get to OS/kernel selection screen |
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| (END) No - Proceed to OS issues tree if able to get to OS/kernel selection screen |
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| title | No - can you get to BIOS using another keyboard and/or USB port after restarting the system? |
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| No - can you get to BIOS using another keyboard and/or USB port after restarting the system? | Expand |
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| title | Yes - go back to "No - can BIOS be accessed using the 'del' key while system powers on?" |
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| Yes - go back to "No - can BIOS be accessed using the 'del' key while system powers on?" |
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| title | No - (see notes) reboot system and try to get BIOS or OS/kernel selection screen; can you access either? |
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| No - (see notes) reboot system and try to get BIOS or OS/kernel selection screen; can you access either? - If the OS boots to a certain point, and display driver or core packages are corrupted, you may lose all keyboard/mouse activity; rebooting and trying to boot from a different point/kernel may help proceed with troubleshooting
- (If cannot get to BIOS) Proceed to OS issues tree if able to get to OS/kernel selection screen
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| title | Yes - if BIOS, go back up to "No - can BIOS be accessed using the 'del' key while system powers on?" |
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| Yes - if BIOS, go back up to "No - can BIOS be accessed using the 'del' key while system powers on?" |
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| title | No - can you get to BIOS by removing all drives and then trying the 'del' key again? |
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| No - can you get to BIOS by removing all drives and then trying the 'del' key again? - Make sure system is powered off before removing/installing drives
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| title | Yes - are onboard/offboard settings correct? |
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| Yes - are onboard/offboard settings correct? - This can impact display for the OS, and possibly a sanity check to ensure they are using the correct display configuration to access OS
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| title | Yes - Does inserting the drive back in cause the same issue? |
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| Yes - Does inserting the drive back in cause the same issue? - This can impact display for the OS, and possibly a sanity check to ensure they are using the correct display configuration to access OS
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| title | Yes - Does system boot up using another (separate) boot drive installed? |
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| Yes - Does system boot up using another (separate) boot drive installed? | Expand |
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| title | (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) |
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| (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) - Multiple boot drives and are setup as RAID1 - it is unlikely both drives corrupted at the same time unless the OS/kernel was altered
- escalate to management to have them review scenario or to quote options for drive/OS/SW
- Single boot drive - issue Component RMA
- we need to pre-load the OS/SW at a loss
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| title | (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| title | (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| title | No - (if system was set to use offboard orginally) can you get OS if you change primary display setting to 'onboard'? |
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| No - (if system was set to use offboard orginally) can you get OS if you change primary display setting to 'onboard'? | Expand |
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| title | (END) Yes - boots to OS, see next tree related to OS issues |
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| (END) Yes - boots to OS, see next tree related to OS issues |
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| title | No - Does system boot up using another (separate) boot drive installed? |
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| No - Does system boot up using another (separate) boot drive installed? | Expand |
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| title | (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) |
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| (END) Yes - Corrupted boot drive/OS; possible Component RMA, or escalation (see notes) - Multiple boot drives and are setup as RAID1 - it is unlikely both drives corrupted at the same time unless the OS/kernel was altered
- escalate to management to have them review scenario or to quote options for drive/OS/SW
- Single boot drive - issue Component RMA
- we need to pre-load the OS/SW at a loss
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| title | (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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| (END) No - (unlikely) Motherboard/SATA port issue with board; issue System RMA |
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Need to add
- Constant reboot (for server chassis)
- Reseat power components (redundant, cables)
- Reduce to minimal POST config
- If none of the above resolves, most likely PDB or MB
- Annoying toss-up
Basic power/display issue for workstations (Dev Box or systems with single-display option)
...
/wiki/spaces/WAR/pages/789384865
/wiki/spaces/WAR/pages/789417550
System hangs during POST
Will elaborate later, but this is to generally troubleshoot BMC issues with server motherboards.
Issue: System hangs at BIOS:
IF:
- PSU's are properly plugged in and known-working (correct LED activity)
- All pre-installed [from Vendor] MB components required for POST have been reseated
THEN:
- Configure system for minimal POST configuration [Dual-CPU systems reduced to single-CPU systems installed on first CPU MB socket; single DIMM of memory installed on first Memory DIMM slot for that first CPU MB socket]
*- If dual-CPU system, swap CPU and DIMM to confirm whether root cause is from CPU or DIMM [Need to cycle both CPU's, and less likely that 2x DIMM's fail simultaneously]
IF MINIMAL POST CONFIGURATION STILL DOES NOT ALLOW POST, THEN:
- Reset BMC via IPMI [if accessible]
- Reset BMC via CMOS battery [power drain system, remove CMOS, press+hold power button for 30 seconds]