Independent Windows troubleshooting
Find the error.
Fix Windows safely.
Search an exact code or describe what happened. We separate source-backed code references from deeper guides, and show when to stop before a risky repair.
Try “DRIVER_POWER_STATE_FAILURE”, “0x800F0922”, or “Code 43”.
Start with the screen you saw
Find your next step
A number by itself rarely proves the cause. Choose the Windows feature and whether the PC can start.
Blue screen codes
Find a stop code and identify safer checks.
↗Update errors
Separate download, install, and servicing failures.
↗Boot & recovery
Choose a recovery path while protecting files.
↗Device Manager
Match Code 10, 43, and others to a device.
↗Event IDs
Read provider, channel, and event details together.
↗No code? Start here
Follow the symptom when Windows gives no number.
↗PC brand support
Open the right official OEM support portal.
↗Decision tools
Use the lookup and safe recovery selector.
↗Repair guides
Step-by-step checks with clear risk limits.
↗Windows versions
Check your release before following a fix.
Before changing Windows
Preserve the evidence. Protect your files.
Copy the exact message, note when it appeared, and check whether Windows still reaches the desktop. Back up important files when possible. If BitLocker is active, find the recovery key before entering recovery tools.
If the drive disconnects, makes unusual noises, or contains files you cannot replace, avoid repeated repair attempts. Managed work or school devices should go to IT.
Common paths
All 3,403 identifiers have code-specific reference pages; 131 have deeper researched briefs. Code-specific pages explain the identifier, source level and safer next check. A match is not a diagnosis of your PC.