Performance & Optimization guides
Reclaim speed on a PC that has slowed down: high CPU and RAM use, disk thrashing, startup bloat, and storage that has filled up.
Where to begin
A slow PC usually has one busy resource. Press Ctrl + Shift + Esc to open Task Manager, select Processes, and sort by CPU, Memory, and Disk in turn. The column sitting near 100% tells you which guide to open first.
If nothing stands out, look at what runs at startup and how full the system drive is. Windows needs free space for updates, the page file, and temporary files, so a nearly full C: drive slows everything down.
Laptops need one more check. A battery-saving power plan, or a hot CPU that throttles itself, can make a healthy machine feel old.
Start here
- How to Speed Up a Slow Windows 11 PC
PC running slower than it used to? Speed up a slow Windows 10 or 11 PC with startup cleanup, disk tuning, driver updates, and fewer background apps.
- How to Fix 100% Disk Usage in Windows 11
Fix 100% disk usage in Windows 11 Task Manager. Disable SysMain, update storage drivers, scan for malware, and stop the background tasks behind it.
- How to Fix 100% CPU Usage in Windows 11
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.
- How to Free Up Disk Space When C: Drive Is Full
Reclaim space on a full C: drive in Windows 11. Move files, remove bloat, and clear update leftovers so installs, patches, and saves keep working.
More guides (80)
- Fix WMI Provider Host (WmiPrvSE.exe) High CPU in Windows 11
WMI Provider Host using high CPU? Find the app that keeps querying WMI with Event Viewer, restart the service safely, and repair the WMI repository.
- Fix Windows Security Not Opening or Blank in Windows 11
Windows Security won't open, shows a blank page, or says it's managed by your organization? Reset the app, clear leftover policies, and restore Defender.
- How to Fix UNMOUNTABLE_BOOT_VOLUME in Windows 11
UNMOUNTABLE_BOOT_VOLUME means Windows cannot read its own drive at startup. Save your files, repair the volume from WinRE, and rebuild boot files, in order.
- Fix File Explorer Slow or Stuck on "Working on it..." in Windows 11
File Explorer slow to open folders or stuck on "Working on it..."? Fix folder type detection, dead network drives, thumbnails, and shell extensions.
- Fix External Hard Drive Not Showing Up in Windows 11
External drive not showing in File Explorer? Check Disk Management, assign a drive letter, fix USB power and drivers, and avoid the prompts that erase data.
- Fix Antimalware Service Executable High CPU in Windows 11
Antimalware Service Executable (MsMpEng.exe) eating CPU or disk? Cap scan load, reschedule scans, and add safe exclusions without turning Defender off.
- Windows 11 Power Modes and Power Plans Explained
What Best Performance, Balanced, and Best Power Efficiency do in Windows 11, where the classic power plans went, and which to pick on laptops and desktops.
- How to Fix YouTube and Video Stuttering in Your Browser
YouTube stutters, drops frames, or freezes in Chrome or Edge on Windows 11? Check dropped frames, energy saver, hardware acceleration, and GPU drivers.
- How to Use Task Scheduler in Windows 11
Task Scheduler runs scripts, backups, and cleanups automatically. Here is how to build a task that actually fires, and how to fix one that silently doesn't.
- Fix "Signed In with a Temporary Profile" in Windows 11
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.
- How to Fix a Missing Dual-Boot Menu in Windows 11
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.
- How to Enable Virtualization (VT-x / AMD-V) in the BIOS
Emulators, WSL, and virtual machines all need CPU virtualization switched on in firmware. Here is where each manufacturer hides the setting.
- Fix "User Profile Service Failed the Sign-In" in Windows 11
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.
- Fix Error 0x80070570: File or Directory Is Corrupted
0x80070570 appears when copying files, installing Windows, or updating. It usually means failing storage or bad install media: here is how to tell which.
- How to Fix Boot Device Not Found (3F0) on Windows 11
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.
- How to Install WSL on Windows 11 (and Fix It When It Fails)
Run Ubuntu and other Linux distributions inside Windows 11 with WSL. One command installs it: here is that command, plus fixes for every common error.
- How to Enable Hyper-V in Windows 11
Hyper-V lets you run virtual machines natively in Windows 11 Pro. Here is how to turn it on, create your first VM, and avoid the conflicts it causes.
- How to Fix Error 0x80004005 in Windows 11
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.
- How to Fix DISM Error 0x800f081f in Windows 11
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.
- How to Fix Error 0x80070005 (Access Denied) in Windows 11
Error 0x80070005 blocks Windows Update, Store downloads, and activation with an access denied message. Here is how to restore the permissions it needs.
- How to Fix KERNEL_DATA_INPAGE_ERROR in Windows 11
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.
- How to Reduce Chrome's Memory Usage in Windows 11
Chrome eating gigabytes of RAM and slowing Windows 11? Cut its memory use with Memory Saver, tab management, extension audits, and hardware settings.
- Use Event Viewer to Find Why Your PC Crashed
Event Viewer records what failed before a crash or blue screen. Learn which logs matter, how to filter the noise, and how to find the faulting driver.
- How to Enter BIOS or UEFI Settings in Windows 11
Need to change boot order, enable TPM, or turn off XMP? Here is how to enter BIOS or UEFI on Windows 11 from inside Windows and with the setup key at startup.
- How to Clone a Hard Drive to an SSD in Windows 11
Move Windows 11 to a new SSD without reinstalling. Prepare the drive, clone the whole disk, fix the boot order, and verify the result step by step.
- How to Check Laptop Battery Health in Windows 11
Generate a Windows 11 battery report to compare real capacity against design capacity, judge how much life is left, and decide whether to replace it.
- Fix UNEXPECTED_STORE_EXCEPTION in Windows 11
UNEXPECTED_STORE_EXCEPTION in Windows 11 usually points at a failing drive, display driver, or antivirus. Work through these checks to find the cause.
- How to Fix NTFS_FILE_SYSTEM BSOD in Windows 11
NTFS_FILE_SYSTEM blue screens mean Windows found damage in the file system. Repair the volume, test the drive, and protect your data, in order.
- How to Transfer Files from an Old PC to a New PC
Moving to a new Windows 11 PC? Transfer files, browser data, and settings safely with an external drive, network share, or cloud sync, step by step.
- How to Partition and Format a Drive in Windows 11
Need to split, shrink, or format a drive in Windows 11? Use Disk Management and diskpart to partition safely, pick the right file system, and avoid data loss.
- How to Install Windows 11 on an Unsupported PC
PC blocked by the TPM 2.0 or CPU requirement? Install Windows 11 on unsupported hardware safely, understand the risks, and keep your files, step by step.
- How Much RAM Do I Need? A Practical Guide
8GB, 16GB, or 32GB? Work out how much RAM you actually need for browsing, gaming, or creative work, check what you have, and upgrade without wasting money.
- How to Fix the "Undoing Changes" Loop in Windows 11
Stuck on "We couldn't complete the updates, undoing changes"? Break the loop and install the update properly with these step-by-step fixes.
- How to Fix "There Was a Problem Resetting Your PC"
Windows 11 reset fails with "There was a problem resetting your PC"? Repair the recovery image, use a cloud reset, and get the reset to finish.
- How to Fix Slow File Transfer Speeds in Windows 11
File copies crawling or dropping to zero? Fix the USB, network, and drive bottlenecks that slow Windows 11 file transfers, with step-by-step checks.
- How to Fix Loud Fan Noise on a Windows 11 PC
PC or laptop fans running loud and constant? Find what's loading the CPU, clean the cooling path, and fix fan curves with these step-by-step quieting fixes.
- How to Fix a Laptop Plugged In but Not Charging
Laptop says plugged in, not charging in Windows 11? Test the adapter, reset the battery driver, check charge limits, and fix the port step by step.
- How to Fix Chrome Crashing on Windows 11
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.
- How to Fix Audio Services Not Responding
Troubleshooter says "Audio services not responding" in Windows 11? Restart the audio services, reset permissions, and get sound back step by step.
- How to Fix Low FPS and Stuttering in Games on Windows 11
Games suddenly running at low FPS or stuttering on Windows 11? Fix frame drops with driver updates, power settings, background cleanup, and thermal checks.
- How to Fix the Settings App Not Opening in Windows 11
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.
- How to Disable or Remove Copilot in Windows 11
Want Copilot gone from Windows 11? Remove the taskbar button, uninstall the app, and block it with Group Policy or Registry: every method, step by step.
- How to Repair Windows 11 System Files with SFC and DISM
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.
- How to Fix Sleep and Hibernation Not Working in Windows 11
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.
- How to Set Up Remote Desktop in Windows 11
Control your PC from another device with Remote Desktop. Enable RDP on Pro, work around Home limits, router port forwarding, and safer alternatives.
- How to Reduce Input Lag for Gaming in Windows 11
Mouse sluggish or shots register late? Cut input lag with polling rate, fullscreen, GPU low-latency settings, and display tuning.
- How to Fix Windows 11 Touchpad Not Working on a Laptop
Touchpad frozen, disabled, or gestures gone on Windows 11? Turn off accidental disable keys, reinstall precision drivers, and fix BIOS touchpad settings.
- How to Fix Windows 11 Slow After an Update
PC slow after Patch Tuesday? Clear pending updates, reset Search indexing, trim startup, and undo bad drivers post-update.
- How to Fix Windows 11 After a Bad Update (Rollback Guide)
Blue screen, no boot, or broken Start after Patch Tuesday? Uninstall the last update, roll back Windows 11, and use recovery when the PC won't start.
- How to Fix Windows 11 Slow Wi-Fi Speeds (2.4GHz vs 5GHz)
Wi-Fi slow but connected? Fix band choice, channel congestion, adapter updates, and router settings, not disconnects or DNS.
- How to Fix Slow SSD Speeds in Windows 11
NVMe or SATA SSD feels like a hard drive? Enable TRIM, confirm AHCI mode, check drive health, and rule out thermal or firmware throttling on Windows 11.
- How to Fix a PC That Won't Turn On
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.
- How to Create and Use a System Restore Point in Windows 11
Turn on System Protection, create a restore point before driver or registry changes, and roll Windows 11 back without wiping your files.
- How to Check SSD or Hard Drive Health in Windows 11
Read SMART status, use CrystalDiskInfo, and know when a drive is failing before you lose data. What Caution and reallocated sectors mean on Windows 11.
- How to Restore the Classic Right-Click Menu in Windows 11
Bring back the full Windows 10 right-click menu in Windows 11 with one registry key, no more 'Show more options' extra click or laggy context menu.
- Fix Windows 11 Not Shutting Down or Restarting
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.
- How to Fix OneDrive Sync Issues in Windows 11
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.
- How to Activate Windows 11 (and Fix Activation Errors)
Windows 11 not activated, error 0x803fa067, or changed hardware. Link your Microsoft account, enter a product key, and fix activation the official way.
- How to Wipe a PC Before Selling or Donating It
Factory reset and securely erase a Windows 11 PC before you sell or donate it. Remove your Microsoft account, BitLocker keys, and personal files for good.
- How to Optimize Windows 11 for Gaming
Cut background lag, enable Game Mode, and tune Windows 11 for higher FPS and smoother multiplayer, no risky registry hacks, no broken installs.
- Hardware-Accelerated GPU Scheduling in Windows 11
Turn HAGS on or off in Windows 11 Graphics settings. When it helps frame pacing, when to disable it after driver updates, and how to test properly.
- How to Fix High RAM Usage in Windows 11
Task Manager shows 90% memory used with nothing open? Find the process hogging RAM on Windows 11, trim startup apps, and know when 8 GB is too little.
- How to Disable Startup Programs to Speed Up Boot Time
Windows 11 stuck at the logo on every boot? Disable startup apps in Task Manager and Settings so only what you need runs, and cut boot time fast.
- How to Check and Upgrade RAM in Your PC
Find out if your PC has free RAM slots, which DDR type you need, and how to install sticks without breaking clips, before you buy the wrong kit.
- How to Speed Up a Slow Internet Connection on Windows 11
Pages load forever but your phone is fast? Find background downloads, bad DNS, and Wi-Fi issues slowing internet on Windows 11 before you blame your ISP.
- How to Enable TPM 2.0 and Secure Boot for Windows 11
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.
- How to Fix a Laptop Battery Draining Fast in Windows 11
Laptop battery dying in 1–2 hours on Windows 11? Check battery health, power mode, and the apps quietly draining charge, and fix the worst offenders.
- How to Factory Reset Windows 11
Reset Windows 11 to factory settings the right way. Keep your files or wipe everything, choose cloud or local reinstall, and reset even if the PC won't boot.
- How to Check Your PC Specs on Windows 11
Find your CPU, RAM, GPU, motherboard, and storage on Windows 11 using Settings, Task Manager, dxdiag, and System Information, no extra software needed.
- How to Debloat Windows 11 and Remove Bloatware
Remove preinstalled bloatware from Windows 11. Uninstall junk apps, kill startup clutter, and disable background tasks to reclaim speed and disk space.
- How to Disable Telemetry and Tracking in Windows 11
Cut Windows 11 telemetry and tracking. Reduce diagnostic data, turn off the advertising ID, clear activity history, and lock down app permissions.
- How to Fix Windows Update Stuck at 0% or 100%
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.
- How to Choose an SSD for Your PC (SATA vs NVMe)
Buying an SSD for your PC? Understand SATA vs NVMe, M.2 vs 2.5-inch, capacity, and DRAM so you pick the right drive and actually feel the speed boost.
- The Best PC Upgrades to Speed Up an Old Computer
The best upgrades to speed up an old PC, ranked by impact (SSD, RAM, cleanup, and cooling) plus how to know when it's smarter to replace the machine.
- How to Reinstall Windows 11 Without Losing Your Data
Need to reinstall Windows to fix deep system corruption? Here's how to reset or reinstall Windows 11 safely without losing your personal files.
- How to Fix CPU Overheating and Thermal Throttling
PC fans revving loud or games suddenly stuttering on Windows? Diagnose and fix CPU overheating and thermal throttling with temps, paste, and airflow.
- How to Fix a Corrupted USB or External Hard Drive
USB drive or external HDD asking you to format it? Stop. Repair a corrupted Windows drive with chkdsk, recover the files, and avoid permanent data loss.
- How to Stop Windows 11 Automatic Updates
Fed up with random reboots and forced patches on Windows 11? Pause or fully disable automatic Windows Updates with Settings, Services, or Group Policy.
- How to Update PC Drivers Safely in Windows
Update outdated Windows drivers to keep your system stable, stop crashes, and boost gaming performance. Device Manager, OEM tools, and Windows Update.
- How to Clean Junk Files and Optimize Your PC
Clear temp folders, browser caches, and leftover installer files on Windows 11 to free disk space and speed up your PC without touching system files.