Troubleshooting Guides

Malware that survives every scan and reinstall is hiding below Windows. Detect a rootkit or bootkit, remove it properly, and know when a clean install is the only answer.

Malware you deleted keeps coming back? It left a scheduled task, service, or Run key behind. Here is how to find and clear every persistence point in Windows 11.

Fans loud, CPU or GPU pinned when idle, and usage drops the moment you open Task Manager? That is a cryptominer. Here is how to find it and remove it for good.

Locked out by "Something happened and your PIN isn't available"? Sign in with your password, reset the Ngc folder, and set the PIN up again properly.

Blank desktop and a warning that you're using a temporary profile? Your files are safe. Here is how to restore the real profile before anything is lost.

"We couldn't sign you in" or 0x80190001 when adding a Microsoft account? Fix the clock, the sign-in service, and the cached credentials behind it.

PC boots straight into Windows with no choice of operating system? Restore the boot menu with firmware settings, bcdedit, and a GRUB repair if needed.

Locked out with "The User Profile Service service failed the sign-in"? Repair the profile entry in the registry and get your account and files back.

0x80070570 appears when copying files, installing Windows, or updating. It usually means failing storage or bad install media — here is how to tell which.

Error 3F0 appears before Windows even starts — the firmware cannot see a bootable drive. Work through boot order, detection, and BCD repair in that order.

Windows keeps asking for a BitLocker recovery key at every boot? Here is where to find your key, how to get back in, and how to stop the prompt returning.

0x80004005 is Windows saying 'unspecified error' with no detail at all. Here is how to identify which of the five real causes you actually have, and fix it.

0x800f081f means DISM could not find the replacement files it needs. Point it at a Windows 11 ISO with the /Source switch and the repair completes.

PFN_LIST_CORRUPT means Windows' index of physical memory pages was damaged. Test the RAM first, then the storage driver — here is the order that works.

Error 0x80070005 blocks Windows Update, Store downloads, and activation with an access denied message. Here is how to restore the permissions it needs.

KMODE_EXCEPTION_NOT_HANDLED means a kernel-mode program hit an error nothing caught. Find the driver behind it and stop the crashes with these ordered checks.

BAD_POOL_HEADER means a driver corrupted Windows' kernel memory pool. Track down the driver, antivirus, or RAM stick behind it with these ordered checks.

This blue screen usually names the driver that crashed, right on the screen. Read that .sys file, roll the driver back, and stop the reboot loop for good.

KERNEL_DATA_INPAGE_ERROR means Windows could not read data back from the drive. Read the sub-code, test the disk and cable, and fix the real cause.

Windows 11 failing to install .NET Framework 3.5 with error 0x800F0950 or 0x800F081F? Install it from the ISO source, fix the Group Policy block, and repair Windows Update.

Cannot drag files in File Explorer or drop them onto the taskbar in Windows 11? Clear the stuck drag state, fix Explorer, and rule out the shell extensions behind it.

Nobody can hear you on Discord in Windows 11? Fix input device selection, exclusive mode, privacy permissions, and the push-to-talk and voice settings behind a dead mic.

Windows 11 refusing to delete a file because it is in use? Find the process holding it, close the handle safely, and delete stubborn files and folders for good.

Camera works in the Windows Camera app but not in Teams or Zoom? Fix app permissions, the device already in use error, virtual camera conflicts, and driver problems.

BAD_SYSTEM_CONFIG_INFO means the registry or boot configuration is damaged. Repair BCD, restore the registry hives, and get back into Windows 11 with these ordered steps.

Access denied when opening or deleting your own files in Windows 11? Take ownership, repair broken permissions, and fix folders inherited from an old PC or user account.

Event Viewer records what failed before a crash, freeze, or blue screen. Learn which logs matter, how to filter out the noise, and how to read a minidump for the driver at fault.

Blue screen showing WHEA_UNCORRECTABLE_ERROR in Windows 11? It means hardware reported a fault Windows cannot recover from. Isolate RAM, CPU, drive, or overclock with these fixes.

Getting "VCRUNTIME140.dll was not found" when opening an app or game? Install the right Visual C++ redistributable and repair the broken one with these steps.

UNEXPECTED_STORE_EXCEPTION in Windows 11 usually points at a failing drive, a display driver, or antivirus. Work through these ordered checks to find the real cause and fix it.

Outlook stuck on the loading profile screen, crashing at startup, or refusing to open in Windows 11? Fix it with safe mode, add-in checks, profile repair, and Office repair.

Screen goes black and Windows says the display driver stopped responding and has recovered? Fix the TDR timeout, unstable GPU clocks, and power settings behind it.

CLOCK_WATCHDOG_TIMEOUT means a CPU core stopped responding to the rest of the processor. Fix unstable overclocks, bad drivers, and cooling faults with these step-by-step checks.

USB device not recognized or showing Unknown Device in Windows 11? Reset USB controllers, fix power settings, and get the device detected with these step-by-step fixes.

Stuck on "We couldn't complete the updates, undoing changes made to your computer"? Break the loop and install the update properly with these step-by-step fixes.

Windows 11 reset failing with "There was a problem resetting your PC"? Repair the recovery image, use a cloud reset, and get the reset to complete step by step.

SYSTEM_SERVICE_EXCEPTION blue screen crashing Windows 11? Identify the failing driver, roll it back, repair system files, and stop the crashes step by step.

PAGE_FAULT_IN_NONPAGED_AREA blue screen on Windows 11? Test RAM, roll back drivers, disable fast startup, and repair system files with these step-by-step fixes.

Laptop says plugged in, not charging in Windows 11? Test the adapter, reset the battery driver, check charge limits, and fix the port with these step-by-step fixes.

IRQL_NOT_LESS_OR_EQUAL blue screen on Windows 11? Find the faulty driver, test your RAM, disable overclocks, and stop the crashes with these step-by-step fixes.

DRIVER_POWER_STATE_FAILURE blue screen when your PC sleeps or wakes? Fix the power-management settings and drivers behind it with these step-by-step fixes.

Chrome crashing, freezing, or showing "Aw, Snap!" on Windows 11? Fix the extensions, GPU, and profile problems behind it with these step-by-step fixes.

Windows 11 troubleshooter reporting "Audio services not responding"? Restart the audio services, reset permissions, and get sound back with these step-by-step fixes.

CPU stuck at 100% and your PC crawling? Find the process eating your processor, stop background hogs, and cool a throttling CPU with these step-by-step fixes.

Stuttering, black screens, or driver crashes after a GPU update? Use Display Driver Uninstaller to fully remove old drivers and install clean, step by step.

Chrome showing DNS_PROBE_FINISHED_NO_INTERNET on every site? Fix it by flushing DNS, changing DNS servers, and resetting the network stack — step by step.

Settings app won't open, crashes instantly, or shows a blank window in Windows 11? Fix it with these steps — reset, re-register, and repair methods that work.

Learn how to run sfc /scannow and DISM to repair corrupted Windows 11 system files — the correct order, what each command does, and what to do if they fail.

KERNEL_SECURITY_CHECK_FAILURE blue screen on Windows 11? Fix this BSOD by updating drivers, testing RAM, and repairing system files — step by step.

MEMORY_MANAGEMENT blue screen crashing your Windows 11 PC? Diagnose bad RAM, faulty drivers, and corrupted files with these step-by-step fixes.

Print Screen or Snipping Tool does nothing, screenshots are black, or Win+Shift+S fails? Reset the app, fix keyboard shortcuts, and repair capture permissions.

PC won't sleep, wakes instantly, or hibernate is missing? Fix power plans, wake timers, fast startup, and drivers that block sleep on Windows 11.

Copy and paste broken, Clipboard History empty, or Win+V does nothing? Restart Clipboard, fix Remote Desktop conflicts, and reset clipboard services.

Getting 'The application was unable to start correctly (0xc0000142)'? Fix this launch error with these proven steps — DLL repair, clean boot, and updates.

Program won't start because MSVCP140.dll or VCRUNTIME140.dll is missing? Fix it safely by reinstalling the Visual C++ Redistributable — no shady DLL sites.

Microsoft Store won't open, won't download apps, or throws error 0x80131500? Reset the cache, re-register the Store, and fix the services behind it.

Windows 11 stuck on the spinning dots or loading screen? Cut power-draining peripherals, disable fast startup, and use Startup Repair to boot again.

Control your PC from another device with Remote Desktop — enable RDP on Pro, work around Home limits, router port forwarding, and safer alternatives.

Browser locked by a virus warning? Remove fake antivirus pop-ups and tech-support scareware on Windows 11 without calling the number on screen.

Taskbar frozen, hidden, or icons won't click after an update? Un-hide the bar, restart Explorer, fix tablet mode, and reset shell settings.

Start button dead or menu closes instantly? Restart Explorer, run Start troubleshooter, repair shell settings—no reinstall.

Search box empty, spins forever, or won't find apps and files? Restart Search indexing, rebuild the index, and reset Windows Search without breaking Start.

File Explorer closes alone, hangs on This PC, or won't open folders? Restart Explorer, clear history, disable preview handlers, and fix shell extensions.

Press power and nothing happens—no fans, no lights, or it shuts off instantly? Check outlet, PSU, RAM, and front-panel wiring before replacing parts.

Keyboard dead in Windows but works in BIOS? Fix filter keys, language layout, USB power saving, and drivers—or use the on-screen keyboard to sign in.

Wired internet dead but Wi-Fi works? Check the cable and link lights, reset the adapter, reinstall Ethernet drivers, and fix DHCP on Windows 11.

Missing notifications on Windows 11? Turn off Do Not Disturb, fix per-app notification settings, and re-register the shell to get your alerts back.

Getting the CRITICAL_PROCESS_DIED blue screen on Windows 11? Boot Safe Mode, repair system files, fix bad drivers, and stop stop code 0x000000EF.

PC stuck on 'Shutting down' or screen stays on after Sleep? Close stuck apps, update drivers, and fix fast startup and power settings on Windows 11.

PC locks up, reboots alone, or apps freeze for seconds—check RAM, drivers, disk health, and overheating before you assume Windows is broken.

USB mouse, flash drive, or phone not detected in Windows 11—try different ports, reset controllers, update chipset drivers, and fix power management.

OneDrive stuck on 'Processing', files not uploading, or red X icons—reset the client, check storage, and fix account and path errors on Windows 11.

A program flashes and closes or won't start on Windows 11? Repair the install, clear cache, fix compatibility, and rule out a bad Windows update.

Windows 11 not activated, error 0x803fa067, or changed hardware—link your Microsoft account, enter a product key, and fix activation the official way.

Pop-ups, unknown toolbars, or a PC that slowed overnight—run Windows Defender offline, cut startup malware, and clean browsers without sketchy 'cleaner' apps.

Windows Security shows threats need attention but Defender won't turn on—fix group policy blocks, stale services, and malware that disables antivirus.

Stuck on 'Preparing Automatic Repair' or 'Automatic Repair couldn't repair your PC'? Rebuild boot files, run SFC offline, and break the Windows 11 loop.

PC Health Check failed for the Windows 11 upgrade? Turn on TPM 2.0, Secure Boot, and UEFI in your BIOS so the install completes on supported hardware.

Windows 11 update failing with 0x80070643, 0x800f0922, or 0x80073712? Run the troubleshooter, reset Update components, and install the patch manually.

Monitor stays black when the PC powers on — no BIOS, no login, or just a cursor? Cable checks, GPU swaps, driver rollback, and Windows boot recovery.

Windows 11 printer stuck offline or jobs stuck in queue? Set the printer online, clear the print spooler, reinstall the driver, and fix Wi-Fi printer IPs.

Bluetooth missing, won't pair, or headphones connect on Windows 11 with no sound? Restart Bluetooth services, update drivers, and re-pair devices fast.

Webcam stays black in Teams or Zoom on Windows 11? Fix camera privacy settings, the Fn-key shutter, drivers, and the right device selected in the app.

Second monitor not detected on Windows 11? Fix it with the Extend display setting, HDMI/DisplayPort cable checks, GPU ports, dock drivers, and ghosts.

Fix Windows 11 Update stuck at 0% or 100%? Reset the Windows Update cache, run DISM and SFC, clear failed installs, and get patches flowing again.

Need to reinstall Windows to fix deep system corruption? Here's how to reset or reinstall Windows 11 safely without losing your personal files.

PC fans revving loud or games suddenly stuttering on Windows? Diagnose and fix CPU overheating and thermal throttling with temps, paste, and airflow.

Need to remove malware or uninstall a stubborn driver on Windows 11? Boot into Safe Mode the easy way — from Settings, sign-in, or a black-screen PC.

Read the BSOD stop code, boot Safe Mode, update drivers, and run SFC and memory tests when Windows blue-screens. Fix Blue Screen of Death step by step.