TREE OF KNOWLEDGE
- 7.2.1Android
- 7.2.1.1Android is slow and laggy: how to speed up your phone without a factory reset
- 7.2.1.2Android battery drains fast: diagnosis and safe optimizations
- 7.2.1.3Android storage is full: how to free space without deleting important data
- 7.2.1.4No notifications on Android: messages arrive late or not at all
- 7.2.1.5Google account sync issues on Android: contacts, mail, and calendar not syncing
- 7.2.1.6Android apps crash or won’t open: causes and step‑by‑step fixes
- 7.2.1.7Google Play won’t install or update apps: “Waiting for download”, errors, and how to fix them
- 7.2.1.8Android camera not working: “Camera stopped”, black screen, photos not saved
- 7.2.1.9Android microphone or sound not working: calls, WhatsApp, Telegram, poor audio
- 7.2.1.10Android overheating: why your phone gets hot and how to protect the battery
- 7.2.1.11Android keeps restarting or freezing: calm diagnosis without panic
- 7.2.1.12Android pop-up ads and random websites: how to remove adware and regain control
- 7.2.1.13Android does not detect SIM card or network drops: step-by-step troubleshooting
- 7.2.1.14Bluetooth not connecting or constantly disconnecting on Android
- 7.2.1.15Android touchscreen not responding or behaving erratically
- 7.2.1.16Google account storage full: how to free space in Gmail, Drive, and Photos
- 7.2.1.17How to transfer data to a new Android phone without losing anything
- 7.2.1.18Two-factor authentication (2FA) on Android: how to secure accounts and avoid lockouts
- 7.2.1.19Android apps crash or close unexpectedly: how to find and fix the cause
- 7.2.1.20Android not charging or charging slowly: cable, adapter, port, or battery?
- 7.2.1.21How to safely check Android for viruses and malicious apps
- 7.2.1.22Android location (GPS) not working: navigation inaccurate or cannot find position
- 7.2.1.23How to free RAM on Android and improve system responsiveness
- 7.2.1.24Android phone won’t turn on or is stuck on the logo: step-by-step recovery
- 7.2.1.25Android: how to take screenshots and record the screen (built-in methods and common issues)
- 7.2.1.26Parental controls on Android: how to limit access for children
- 7.2.1.27Android: how to recover deleted photos and files
- 7.2.1.28Android contactless payments: how to set up NFC and Google Wallet and fix common issues
- 7.2.1.29Digital Wellbeing on Android: control screen time and notifications
- 7.2.1.30Work profile on Android: separating personal and work data
- 7.2.2Clouds
- 7.2.2.1What cloud services are and why regular users need them
- 7.2.2.2Cloud storage services: Google Drive, OneDrive, Dropbox — how to choose
- 7.2.2.3Cloud backups: how to protect your data and avoid losing files
- 7.2.2.4Cloud collaboration: how to share files and folders securely
- 7.2.2.5Cloud account security: how to protect your data from hacks
- 7.2.2.6Cloud storage vs local storage: pros, cons, and the right balance
- 7.2.2.7Mobile cloud: how synchronization works on smartphones (Android and iOS)
- 7.2.2.8Cloud photos and videos: Google Photos, iCloud, OneDrive — how to use them correctly
- 7.2.2.9Cloud-to-cloud migration: how to move files safely between cloud services
- 7.2.3NET
- 7.2.3.1How the internet works: a simple explanation for everyday users
- 7.2.3.2Home internet and Wi‑Fi: how to set up a stable connection
- 7.2.3.3Wired vs wireless internet: what to choose and when
- 7.2.3.4Internet is slow: how to find the cause and what to do
- 7.2.3.5DNS explained simply: why it matters and when to change it
- 7.2.3.6VPN, proxy, and Tor: what is the difference and what should users choose
- 7.2.3.7Mobile internet and Wi‑Fi hotspot: how to set it up and avoid wasting data
- 7.2.3.8Public Wi‑Fi networks: how to connect safely
- 7.2.3.9Websites do not open: blocks, errors, and ways to fix access
- 7.2.3.10Ping and latency: why the internet is connected but feels slow
- 7.2.3.11When the problem is the ISP: how to identify it and what to report
- 7.2.3.12Internet is connected but not working: common causes and solutions
- 7.2.4Programs
- 7.2.4.1How to choose computer programs correctly and avoid installing unnecessary software
- 7.2.4.2Free vs paid software: what is the real difference
- 7.2.4.3Removing and replacing programs: how to keep your system clean
- 7.2.4.4Windows programs: types, installation methods, and safe sources
- 7.2.4.5Android apps: app stores, APK files, and security basics
- 7.2.4.6macOS programs: understanding the Apple ecosystem
- 7.2.4.7Cross-platform programs: one solution for multiple operating systems
- 7.2.4.8Portable programs: working without installation
- 7.2.4.9Web applications: when software runs in a browser
- 7.2.4.10Keeping programs updated: why updates matter
- 7.2.4.11Program licenses: legal use explained simply
- 7.2.4.12Programs for older computers: how to keep performance acceptable
- 7.2.5Security
- 7.2.5.1How to recognize phishing: fake emails, SMS, and messenger messages
- 7.2.5.2What to do if your account is hacked: a step-by-step recovery plan
- 7.2.5.3Password managers: how to choose and use them safely
- 7.2.5.4Two-factor authentication (2FA): how to enable it without losing access
- 7.2.5.5Securing Gmail and Outlook: settings that really improve security
- 7.2.5.6Secure Wi‑Fi: staying safe at home and in public (without paranoia)
- 7.2.5.7Smartphone security: essential settings everyone should enable
- 7.2.5.8How to check if your data has leaked (email, passwords) and what to do next
- 7.2.5.9Social engineering: how scammers manipulate people and how to resist
- 7.2.5.10Backups: how to protect data from loss and ransomware
- 7.2.5.11System and app updates: why they are critical for security
- 7.2.5.12Antivirus and security software: do you need them and how to avoid harm
- 7.2.5.13Browser security: how to protect yourself from malicious websites and extensions
- 7.2.5.14Secure online payments: how to protect bank cards and avoid fraud
- 7.2.5.15Windows computer protection: basic security steps for everyday users
- 7.2.5.16Messenger security: how to protect chats and accounts
- 7.2.5.17Cloud service security: Google Drive, OneDrive, iCloud
- 7.2.5.18Lost or stolen device: what to do to protect your data
- 7.2.6Virtual machines
- 7.2.6.1What is virtualization and why a regular user may need it
- 7.2.6.2Popular virtualization software: VirtualBox, VMware, Hyper-V
- 7.2.6.3How to create your first virtual machine: a universal step-by-step logic
- 7.2.6.4Guest Additions / Tools: why they are needed and how to install them
- 7.2.6.5Shared folders between host and virtual machine: safe file exchange
- 7.2.6.6Removing a virtual machine cleanly: free space without breaking the system
- 7.2.6.7Moving a virtual machine to another computer without reinstallation
- 7.2.6.8Virtual machine security: isolation, malware, and real risks
- 7.2.6.9Virtual machine vs Dual Boot: what to choose and why
- 7.2.6.10Types of virtual machines and virtualization software: what exists and how they differ
- 7.2.7Windows
- 7.2.7.1Windows runs slowly: step-by-step diagnostics and performance improvement
- 7.2.7.2Windows does not boot or keeps restarting endlessly
- 7.2.7.3Drivers in Windows: how to update them correctly and fix issues
- 7.2.7.4Windows Wi-Fi and internet issues: step-by-step troubleshooting
- 7.2.7.5Windows updates: how to install them safely and fix update errors
- 7.2.7.6Backup and recovery in Windows: how to avoid losing data
- 7.2.7.7Windows security: basic settings everyone should enable
- 7.2.7.8Users and permissions in Windows: how to avoid accidental system damage
- 7.2.7.9Cleaning and maintaining Windows without third-party software
- 7.2.7.10Setting up a new Windows PC: what to do on the first day
- 7.2.7.11Migrating Windows to SSD: speeding up your PC without reinstalling
- 7.2.7.12Recovering Windows after a serious failure without data loss
- 7.2.7.13Printer not printing in Windows: step-by-step fixes for common issues
- 7.2.7.14Sound and microphone problems in Windows: what to check first
- 7.2.7.15Upgrading to Windows 11: requirements, preparation, and common issues
- 7.8.8linux