CONNECTED_STANDBY_WATCHDOG_TIMEOUT_LIVEDUMP (0x15F)
What is this error?
A watchdog timeout occurred during Connected Standby (Modern Standby). A driver failed to complete an operation during sleep transition.
Common causes
- network driver failing during sleep
- USB driver preventing standby
- GPU driver sleep transition failure
- BIOS power management bug
How to fix it
- Update network and USB drivers
- disable Connected Standby
- update BIOS
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
Bug check 0x0000015F (CONNECTED_STANDBY_WATCHDOG_TIMEOUT_LIVEDUMP) occurs during Modern Standby (Connected Standby) transitions. Modern Standby replaces traditional S3 sleep with a low-power state that maintains network connectivity. The timeout means a driver failed to enter the low-power state within the allowed time. Very common with network drivers that need to maintain WiFi connections during standby, USB devices preventing proper standby, and GPU drivers failing power state transitions. Fixes:
- Update WiFi and network drivers from manufacturer,
- Update GPU driver,
- Disable Connected Standby if not needed: HKLM\SYSTEM\CurrentControlSet\Control\Power → CsEnabled DWORD = 0,
- Disable USB selective suspend in Power Options,
- Update BIOS — modern standby support improves with BIOS updates,
- Alternatively, disable hybrid sleep and use traditional S3 sleep.
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
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