All problems & guides
Browse by topic. These pages are readable without JavaScript and work from the downloaded folder too.
Windows Update
- 0x80070005 – Access denied
- 0x80070002 – File not found
- 0x80070003 – Path not found
- 0x80070422 – Service is disabled
- 0x800f081f – Source files are missing
- 0x80070057 – Invalid parameter
- Windows Update is stuck
- 0x800F0922 – Update could not be completed
- 0x80073712 – Component memory corrupted
- 0x800F0831 – Update package dependency missing
- 0x80070020 – file is in use
- 0x80240034 – Update download failed
- 0x80070643 – Installation error
- 0x80070652 – Other installation is running
- 0x80070666 – Newer version already available
- 0x80070005 - Edge/Office – Access denied (Edge/Office)
- 0xC1900101 – Windows upgrade has been rolled back
- 0xC1900208 – Incompatible application blocks upgrade
- 0x80070424 – Required service not available
- 0x80070490 – Required item not found
Startup & blue screens
- 0xC000021A – Windows does not start correctly
- INACCESSIBLE_BOOT_DEVICE – Boot drive not accessible
- CRITICAL_PROCESS_DIED – Critical process terminated
- DRIVER_POWER_STATE_FAILURE – Driver/power state error
- 0x0000007B – INACCESSIBLE_BOOT_DEVICE
- 0x0000001A – MEMORY_MANAGEMENT
- 0x0000003B – SYSTEM_SERVICE_EXCEPTION
- 0x00000124 – WHEA_UNCORRECTABLE_ERROR
- 0x00000050 – PAGE_FAULT_IN_NONPAGED_AREA
- 0x000000D1 – DRIVER_IRQL_NOT_LESS_OR_EQUAL
- 0x0000007E – SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
- 0x000000F4 – CRITICAL_OBJECT_TERMINATION
- 0x0000000A – IRQL_NOT_LESS_OR_EQUAL
- 0x00000024 – NTFS_FILE_SYSTEM
- 0x0000001E – KMODE_EXCEPTION_NOT_HANDLED
- 0x000000C2 – BAD_POOL_CALLER
- 0x0000007A – KERNEL_DATA_INPAGE_ERROR
- 0x0000005A – CRITICAL_SERVICE_FAILED
Internet, router & Wi-Fi
- 0x8024402C – Proxy/DNS issue
- 0x80070035 – Network path not found
- 0x80070043 – Network name not found
- 0x80072EE7 – Server name cannot be resolved
- 0x80072EFD – Connection failed
- 0x80072F8F – Secure connection failed
- 0x800704CF – Network access not possible
- 0x80070079 – Timeout (semaphore)
- 0x800CCC0E – Unable to send email
- DNS_PROBE_FINISHED_NXDOMAIN – Internet address not found
- ERR_CONNECTION_REFUSED – Connection was refused
- ERR_CONNECTION_TIMED_OUT – Website does not respond in a timely manner
- ERR_CERT_DATE_INVALID – Certificate is temporarily invalid
- ERR_TOO_MANY_REDIRECTS – Website redirects endlessly
- HTTP 403 – Access to website not allowed
- HTTP 404 – Website not found
- HTTP 500 – Internal server error
- HTTP 503 – Service temporarily unavailable
- 0x800CCC0F – Email connection interrupted
- Router: no internet
- Router keeps disconnecting
- Wi-Fi connected but no internet
- Wi-Fi slow or weak
- Wi-Fi network not listed
- Wi-Fi password rejected
- Repeater or mesh will not connect
- Phone keeps losing home Wi-Fi
- Smart-home device will not join Wi-Fi
- Wired Ethernet connection not working
Printers
- Printer does not print
- 0x0000011B – Connection to shared printer failed
- Printer is offline – Printer reports no connection
- Printer reports a paper jam
- Printer produces blank pages or streaks
Devices & accessories
- USB device not recognized
- 0x800701B1 – Device not present
- 0x8007045D – I/O device error
- 0x80070015 – Device not ready
- USB device missing – USB device not recognized
- Code 10 – Device cannot start
- Code 28 – Driver not installed
- Code 43 – Device has stopped
- Code 31 – Device is not working
- Code 45 – Device not connected
- Screen flickers – Screen flickers or shows errors
- Code 19 – Device configuration corrupted
- Code 22 – Device is deactivated
- Code 24 – Device not present or set up incompletely
- Code 32 – Driver service disabled
- Code 39 – Unable to load device driver
- Code 52 – Driver signature cannot be verified
- 0xA00F4244 – No camera found
- 0xA00F4243 – Camera may be used by another app
- Keyboard does not respond
- Mouse pointer will not move
- Laptop touchpad not working
- Bluetooth device not found
- Laptop battery will not charge
Sound & microphone
- No sound – Windows makes no sound
- Microphone not working – Microphone is not recognized
- Microphone cannot be heard – Mute microphone in calls
- Bluetooth headphones connected but no sound
Apps & browsers
- App will not start – Program does not start
- 0xC000007B – Incorrect application configuration
- 0xC0000005 – Access violation
- 0x80073CF9 – Store app cannot be installed
- 0x80131500 – General Exception - Check Context
- 0x8007007E – Dll not found
- 0x800700C1 – Invalid Win32 program
- Microsoft Store will not open – Microsoft Store does not start
- Windows Search is not working – Windows search finds nothing
- 0x803F8001 – App license could not be confirmed
- 0x80073D02 – App files are currently in use
- 0x80040154 – Class not registered
- 0xC0000142 – Application could not be initialized
- 0x800700E1 – File detected as a virus or unwanted software
- 0x8004010F – Outlook data file cannot be reached
- 0x803F7001 – No valid Windows license found
- 0xC004F213 – Windows cannot find a product key
- PIN unavailable – Windows Hello login fails
- Browser keeps showing notifications or fake virus alerts
- Email with an attachment will not send
Performance & heat
- Slow PC – PC is very slow
- 0x8007000E – Not enough memory
- PC freezes – Windows hangs or freezes
- Laptop gets hot and fan is loud
Storage & drives
- Cannot delete a file – File cannot be deleted
- Storage is full – Not enough storage space
- 0x80070070 – Not enough disk space
- 0x80070017 – Data/CRC error
- 0x81000019 – Shadow copy not available
- 0x800423F4 – VSS writer failed
- 0x800700DF – File exceeds an allowed size limit
- 0x8007016A – Cloud file provider is not running
- 0x80070194 – Cloud file provider terminated unexpectedly
- 0x80070570 – File or directory corrupted or unreadable
- 0x80070780 – System cannot access the file
- 0x80070021 – Part of the file is locked
- BitLocker asks for a recovery key – Drive is protected
- USB drive or external disk not showing
TV / Smart TV
- TV shows no signal
- TV has a picture but no sound
- Smart TV will not connect to Wi-Fi
- TV streaming buffers or will not load
- TV screen stays black
- TV remote does not respond
- Smart TV app missing or no longer supported
- TV sound and picture out of sync
Graphics card / Monitor
- Graphics card: no picture on monitor
- Graphics card shows lines or artifacts
- Graphics driver crashes during games
- Second monitor not detected
- Monitor picture is blurry or too large
- Game uses the wrong graphics processor
Step-by-step guides
- Windows Update doesn't work
- Printer does not print
- No internet
- PC is slow
- Blue screen occurs
- No sound
- USB doesn't work
- Program does not start
- Not enough storage space
- Screen black / flickering
- Back up important files
- False virus warning in the browser
- Camera is not working
- Bluetooth does not connect
- Check router and internet
- Check Wi-Fi step by step
- TV: picture, sound and connection
- Check graphics card and monitor