Fix Frozen Start Menu & Taskbar
Troubleshoot a frozen or unresponsive Start Menu and Taskbar on Windows Server and Windows desktop systems.
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Windows Troubleshooting
Windows 11, Windows 10 & Windows Server Troubleshooting Guides
Step-by-step Windows troubleshooting guides for Start Menu, Taskbar, Microsoft Photos, Command Prompt, PowerShell, Remote Desktop, storage, security, printer drivers and other common Windows problems.
Windows Troubleshooting Guides
JPG File Not Opening? Fix Microsoft Photos
Troubleshoot JPG and JPEG files that fail to open correctly in Microsoft Photos on Windows 11 and Windows 10.
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Find Computer Serial Number Using CMD
Find the computer or BIOS serial number from Windows without physically opening the PC.
Read the GuideWindows Server 2019 Remote Desktop Fix
Troubleshoot Remote Desktop Connection problems, RDP settings, Windows Firewall and Remote Desktop services.
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Printer Driver Won't Delete in Windows 11?
Troubleshoot printer drivers that remain installed or cannot be removed from Windows.
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C Drive Full But No Files?
Investigate hidden storage, AppData, temporary files and Windows system data consuming C drive space.
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Microsoft Defender PowerShell Malware Scan
Run Microsoft Defender Quick, Full and Offline scans and review Windows security information using PowerShell.
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Investigate Connections with CMD & Netstat
Inspect network connections, listening ports and process IDs when investigating unusual Windows network activity.
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DISM Error 0x800F0915 Fix on Windows 11
Fix DISM RestoreHealth error 0x800F0915 when Windows reports that the repair content could not be found. Includes SFC, Windows Update reset, ISO install.wim repair source and CBS log troubleshooting.
Read the Guide Watch on YouTubeWindows 11 Troubleshooting
Windows 11 problems can involve applications, drivers, storage, networking, Windows Update, security components or the Windows user interface.
Before changing system settings, identify the exact problem and check whether it started after a Windows update, driver change, software installation or configuration change.
Windows 10 Troubleshooting
Many diagnostic tools used in Windows 11 also exist in Windows 10, including Command Prompt, PowerShell, Task Manager, Device Manager, Windows Security and storage-management tools.
However, menus and available features can differ between Windows versions, so always follow instructions appropriate to your installed version.
Windows Server Troubleshooting
Windows Server troubleshooting can involve Remote Desktop, Windows services, firewall rules, network connectivity, user sessions, system processes and server roles.
Production servers should be changed carefully. Check the effect of a command or configuration change before applying it to an important server.
Windows Command Prompt Troubleshooting
Command Prompt remains useful for checking system information, network connections, serial numbers, files and Windows configuration.
UniTech LK CMD guides include:
Windows PowerShell Troubleshooting
PowerShell provides detailed access to Windows system, security, storage and administration information.
Browse Windows Troubleshooting by Topic
Windows Storage
C drive full, hidden files, TreeSize, PowerShell storage analysis and HDD/SSD troubleshooting.
Storage GuidesWindows Security
Microsoft Defender, malware scanning, suspicious connections, CMD and Netstat troubleshooting.
Security GuidesPowerShell
PowerShell commands and troubleshooting for Windows administrators and everyday Windows users.
PowerShell GuidesWindows Printer Problems
Printer drivers, Print Spooler, Canon errors and Windows printer troubleshooting.
Printer GuidesMicrosoft Office
Word, OneNote, Excel, Microsoft 365 and Office troubleshooting guides.
Office GuidesWindows Troubleshooting Topics
- Windows 11 troubleshooting
- Windows 10 troubleshooting
- Windows Server troubleshooting
- Windows 11 problems and fixes
- Windows Start Menu not working
- Windows Taskbar frozen
- Microsoft Photos not opening JPG
- JPG file not opening Windows 11
- Windows CMD commands
- Windows PowerShell commands
- Find computer serial number Windows
- Windows Server Remote Desktop not working
- RDP troubleshooting Windows Server
- Windows printer driver won't delete
- Windows C drive full
- Windows hidden files taking space
- Windows malware scan
- Microsoft Defender PowerShell
- Windows Netstat commands
- Check suspicious connections Windows
- Windows storage troubleshooting
- Windows security troubleshooting
Before Making Major Windows Changes
Do not delete unknown Windows files, disable important services, remove system drivers or change registry settings without first understanding what the component does.
For important systems, create an appropriate backup or restore option before making major changes.
Windows Troubleshooting Frequently Asked Questions
What should I check first when Windows has a problem?
Identify the exact symptom, check your Windows version and determine whether the issue started after an update, software installation, driver change or configuration change.
Should I use CMD or PowerShell?
Both are useful. CMD remains suitable for many traditional Windows commands, while PowerShell provides more powerful object-based administration and automation capabilities.
Can I use Windows Server commands on Windows 11?
Some commands are shared between Windows editions, but features, services and roles can differ. Verify that a command applies to your operating system before using it.
Can troubleshooting commands damage Windows?
Diagnostic commands are often safe, but commands that delete files, remove drivers, change services or modify system configuration can affect Windows. Understand the command before running it.