Nizam Ud Deen
Muhammad Nizam Ud Deen Usman is the founder of theCoreiTech and the author of The Local SEO Cosmos. Nizam works as an SEO consultant and content strategy expert with more than a decade of experience in digital marketing and IT, and he also founded ORM Digital Solutions, a digital agency serving medium and large businesses. He holds a degree from the University of Education, Lahore (Multan Campus), and was listed among the top 20 SEO experts in Pakistan in 2024. Nizam started theCoreiTech in 2012 to make computers easier to understand and use for everyone. Connect with Nizam on LinkedIn (seoobserver), X (@SEO_Observer), or at nizamuddeen.com.
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Troubleshooting & Fixes
How to Fix an Overheating Laptop
Overheating laptop shutting down or throttling? Fix high temperatures by clearing dust, repasting, adjusting power limits, and improving ventilation.
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Troubleshooting & Fixes
How to Fix 100% Disk Usage in Windows
Fix 100 percent disk usage in Windows by identifying the process, disabling SysMain and Windows Search, setting a fixed pagefile,…
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Troubleshooting & Fixes
How to Fix High CPU Usage
Fix high CPU usage by finding the top process in Task Manager, ending or updating runaway apps, scanning for malware,…
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Troubleshooting & Fixes
How to Fix High RAM and Memory Usage
Fix high memory usage by identifying high-memory processes in Task Manager, restarting leaking apps, limiting startup programs, increasing the pagefile,…
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Troubleshooting & Fixes
How to Fix the Blue Screen of Death (BSOD)
Fix the Blue Screen of Death by reading the stop code, updating or rolling back drivers, testing RAM, running SFC…
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Troubleshooting & Fixes
How to Read and Fix BSOD Stop Codes
Read and fix BSOD stop codes: where to find the code, what the most common Windows stop codes mean, and…
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Troubleshooting & Fixes
How to Fix KERNEL_SECURITY_CHECK_FAILURE
Fix KERNEL_SECURITY_CHECK_FAILURE by updating drivers, running SFC and DISM, testing RAM with Windows Memory Diagnostic, running chkdsk, and removing recent…
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Troubleshooting & Fixes
How to Fix DRIVER_POWER_STATE_FAILURE
Fix DRIVER_POWER_STATE_FAILURE by identifying the failing driver in the minidump, updating or rolling it back, disabling Fast Startup, and adjusting…
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Troubleshooting & Fixes
How to Fix SYSTEM_SERVICE_EXCEPTION
Fix SYSTEM_SERVICE_EXCEPTION by identifying the failing driver in the minidump, updating or rolling it back, running SFC and DISM, testing…
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Troubleshooting & Fixes
How to Fix CRITICAL_PROCESS_DIED
Fix CRITICAL_PROCESS_DIED, including the boot loop, with SFC and DISM, driver updates, chkdsk, a clean boot, System Restore, and disk…
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Troubleshooting & Fixes
How to Fix PAGE_FAULT_IN_NONPAGED_AREA
Fix PAGE_FAULT_IN_NONPAGED_AREA by testing and reseating RAM, updating drivers, running SFC and DISM, disabling Fast Startup, and resetting the pagefile.
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Troubleshooting & Fixes
How to Fix a Keyboard That’s Not Working
Keyboard not working on Windows? Fix wired and wireless keyboards by testing the USB port, replacing batteries, reinstalling the driver,…
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Troubleshooting & Fixes
How to Fix a Mouse That’s Not Working
Mouse not working or cursor frozen? Fix wired and wireless mice by testing the USB port, replacing batteries, reinstalling the…
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Troubleshooting & Fixes
How to Fix No Sound on a Computer
Fix no sound on a computer by selecting the correct playback device, checking the Volume Mixer, verifying the cable and…
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Troubleshooting & Fixes
How to Fix a Webcam That’s Not Working
Webcam not working in Windows or Zoom? Fix it by enabling camera access, granting per-app permission, selecting the right camera,…
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Troubleshooting & Fixes
How to Fix a Hard Drive Not Detected
Hard drive not detected in BIOS or Windows? Fix a missing HDD by checking SATA cables and power, the BIOS,…
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Troubleshooting & Fixes
How to Fix a Monitor Showing No Signal
Fix a monitor showing No Signal by selecting the correct input source, plugging into the graphics card ports, swapping the…
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Troubleshooting & Fixes
How to Fix USB Device Not Recognized
USB device not recognized in Windows? Fix it by trying another port, reinstalling USB drivers, disabling USB selective suspend, and…
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Troubleshooting & Fixes
How to Troubleshoot a Motherboard With No Power
Motherboard getting no power? Diagnose a dead board by testing the PSU, checking standoffs and front-panel wiring, clearing CMOS, and…
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Troubleshooting & Fixes
How to Fix Screen Flickering
Fix screen flickering by running the Task Manager test, setting the correct refresh rate, clean-installing the GPU driver with DDU,…
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Troubleshooting & Fixes
How to Fix a Second Monitor Not Detected
Fix a second monitor not detected by pressing Win+P and choosing Extend, forcing Detect in Display settings, swapping the cable,…
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Troubleshooting & Fixes
How to Fix a PC Where Fans Spin But It Won’t Boot
PC fans spin but it won't boot or POST? Fix a no-POST system by reseating RAM and GPU, clearing CMOS,…
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Troubleshooting & Fixes
How to Fix No Internet Connection
Fix no internet connection on Windows by restarting the router, running the Network troubleshooter, renewing the IP address, flushing DNS,…
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Troubleshooting & Fixes
How to Fix Wi-Fi That Keeps Disconnecting
Fix Wi-Fi that keeps disconnecting on Windows by disabling adapter power management, updating the driver, reducing interference, changing the channel,…
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Troubleshooting & Fixes
How to Fix Ethernet Not Working
Fix Ethernet not working on Windows by checking the cable and link lights, swapping the port, enabling and reinstalling the…
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Troubleshooting & Fixes
How to Fix Windows Update Errors
Fix Windows Update errors by reading the error code, running the troubleshooter, clearing the SoftwareDistribution folder, running SFC and DISM,…
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Troubleshooting & Fixes
How to Diagnose and Fix an Overheating PC
PC overheating and shutting down? Diagnose the cause and fix high CPU and GPU temperatures with dust cleaning, repasting, airflow,…
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Troubleshooting & Fixes
How to Fix GPU Artifacts and Graphical Glitches
GPU artifacts, screen tearing shapes, or color glitches? Fix graphical artifacts from overheating, bad drivers, overclocks, and failing VRAM.
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Troubleshooting & Fixes
How to Repair Corrupt System Files with SFC and DISM
Repair corrupt Windows system files by running DISM CheckHealth, ScanHealth, and RestoreHealth, then sfc /scannow, reading CBS.log, and using Recovery…
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Troubleshooting & Fixes
How to Fix a PC That Won’t Shut Down
Fix a PC that will not shut down by disabling Fast Startup, ending blocking apps, resetting the power plan with…
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Troubleshooting & Fixes
How to Fix the Windows Taskbar Not Working
Fix a Windows taskbar that is not working by restarting Windows Explorer, re-registering the taskbar with PowerShell, running SFC and…
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Troubleshooting & Fixes
How to Fix RAM Not Being Detected
RAM not detected or showing less than installed? Fix it by reseating modules, checking slots, updating BIOS, and confirming hardware-reserved…
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Troubleshooting & Fixes
How to Fix an SSD Not Showing Up
SSD not showing up in Windows or BIOS? Fix a missing SSD by initializing it in Disk Management, checking connections,…
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Troubleshooting & Fixes
Computer Troubleshooting Guide: Fix Common PC Problems
A complete computer troubleshooting guide covering boot, performance, blue screen, hardware, display, software, and network problems, with links to 45…
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Computer Hardware
How to Overclock a CPU: Step-by-Step Guide
A step-by-step guide to overclocking a CPU safely: hardware requirements, BIOS multiplier and voltage steps, stress testing, temperature limits, and…
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Computer Hardware
CPU Architecture Explained: How a Processor Is Built
CPU architecture covers the control unit, ALU, registers, cache, pipelines, and instruction sets that define how a processor executes code.
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Computer Hardware
Intel vs AMD: Which CPU Brand Is Better?
Intel vs AMD compared on gaming, productivity, power, price, and platform longevity to show which CPU brand fits each use…
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Computer Hardware
CPU Clock Speed Explained: GHz, Turbo Boost & Performance
CPU clock speed explained: what GHz measures, base vs boost clocks, how clock speed affects performance, and why higher GHz…
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Computer Hardware
How RAM Works: Inside Computer Memory
RAM is volatile working memory that holds active data for the processor. This guide explains DRAM cells, refresh, the memory…
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Computer Hardware
How Much RAM Do You Need?
How much RAM you need by task: 8GB, 16GB, 32GB, and 64GB use cases for browsing, gaming, content creation, and…
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Computer Hardware
CPU Cache Explained: L1, L2, and L3 Memory
CPU cache explained: how L1, L2, and L3 cache work, their sizes and speeds, cache hits vs misses, and the…
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Computer Hardware
CPU Generations Explained: How Processor Families Evolve
CPU generations explained: how Intel Core and AMD Ryzen number their generations, what changes each generation, and how to read…
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Computer Hardware
Best CPUs for Gaming: How to Choose by Tier
Choose the best CPU for gaming by tier: what makes a gaming CPU, why single-thread speed and cache matter, and…
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Computer Hardware
Best CPUs for Workstations: Choosing for Productivity
Choose the best CPU for workstations by workload: why core count and memory bandwidth matter for rendering, video editing, and…
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Computer Hardware
DDR4 vs DDR5 RAM: Which Should You Buy?
DDR4 vs DDR5 RAM compared across data rate, latency, voltage, capacity, platform support, and price, with a clear recommendation for…
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Computer Hardware
RAM Speed and Timings Explained: MHz and CAS Latency
RAM speed and timings explained: the difference between MHz and MT/s, what CAS latency and timing numbers mean, how to…
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Computer Hardware
ARM vs x86 Processors: Key Differences Explained
ARM vs x86 processors compared on RISC vs CISC design, power efficiency, performance, software compatibility, and use cases.
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Computer Hardware
CPU Cores and Threads Explained
CPU cores and threads explained: what a core is, how multithreading works, and how many cores you need for gaming…
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Computer Hardware
Single vs Dual Channel Memory: Performance Difference
Single vs dual channel memory explained: how a second 64-bit channel doubles bandwidth, the measured performance gains in gaming and…
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Computer Hardware
ECC vs Non-ECC RAM: Do You Need Error Correction?
ECC vs non-ECC RAM compared: how error-correcting code memory detects and fixes bit errors, who needs it, the supported platforms,…
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Computer Hardware
How to Install RAM: Step-by-Step Guide
How to install RAM step by step: powering down safely, checking compatibility, choosing the correct DIMM slots, seating modules, and…
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Computer Hardware
RAM Form Factors: DIMM vs SO-DIMM
RAM form factors explained: DIMM for desktops, SO-DIMM for laptops, the new CAMM2 standard, server RDIMM and LRDIMM, and soldered…
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Computer Hardware
HDD vs SSD: Which Storage Drive Is Better?
HDD vs SSD compared across storage method, speed, price per terabyte, durability, lifespan, noise, and power to show which storage…
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Computer Hardware
How SSDs Work: NAND Flash and Controllers
How SSDs work: how NAND flash cells store bits, what the controller and DRAM cache do, and how wear leveling,…
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Computer Hardware
NVMe vs SATA SSD: What’s the Difference?
NVMe vs SATA SSD compared: interface and protocol differences, sequential and random speeds, latency, queue depth, and when NVMe speed…
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Computer Hardware
M.2 vs SATA Storage: Form Factor and Interface
M.2 vs SATA explained: why M.2 is a form factor and SATA is an interface, the M.2 SATA vs M.2…
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Computer Hardware
How Hard Drives Work: Platters, Heads, and Actuators
How hard drives work: spinning platters store data magnetically, read/write heads and actuators move across tracks, and RPM, cache, and…
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Computer Hardware
How to Choose a Graphics Card: Buyer’s Guide
How to choose a graphics card: matching GPU tier to resolution and refresh rate, checking VRAM, PSU wattage, case clearance,…
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Computer Hardware
Best GPUs for Gaming: Picks by Resolution Tier
Best GPUs for gaming by resolution: representative graphics cards for 1080p, 1440p, and 4K, with the VRAM, ray tracing, and…
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Computer Hardware
How to Choose a Storage Drive: Buyer’s Guide
How to choose a storage drive: match SSD or HDD, NVMe or SATA, capacity, endurance, and form factor to gaming,…
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Computer Hardware
GPU Cooling Explained: Fans, Heatsinks, and Coolers
GPU cooling explained: how heatsinks and fans dissipate heat, open-air vs blower vs liquid cooling, thermal throttling, and safe GPU…
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Computer Hardware
RAID Levels Explained: RAID 0, 1, 5, 6, and 10
RAID levels explained: how RAID 0, 1, 5, 6, and 10 balance speed, redundancy, and usable capacity, plus the minimum…
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Computer Hardware
External vs Internal Storage: Which to Choose
External vs internal storage compared: interface speeds, portability, backup use, security, and cost to decide between internal and external drives.
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Computer Hardware
Ray Tracing Explained: How Real-Time Lighting Works
Ray tracing explained: how ray tracing simulates light paths for realistic reflections and shadows, the role of RT cores, and…
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Computer Hardware
How GPUs Work: Parallel Processing Explained
How GPUs work: how thousands of cores render graphics in parallel, the rendering pipeline, the role of VRAM, and how…
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Computer Hardware
Nvidia vs AMD GPUs: Which Graphics Card Brand?
Nvidia vs AMD GPUs compared on raster performance, ray tracing, upscaling, VRAM, power, and price to pick the right graphics…
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Computer Hardware
VRAM Explained: How Much Video Memory You Need
VRAM explained: what video memory does, GDDR6 vs GDDR6X bandwidth, how much VRAM you need by resolution, and what happens…
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Computer Hardware
Integrated vs Dedicated Graphics: What’s the Difference?
Integrated vs dedicated graphics compared: how iGPUs share system RAM versus dedicated GPUs with VRAM, performance gaps, power use, and…
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Computer Hardware
GPU Architecture Explained: Cores, Shaders, and Clusters
GPU architecture explained: streaming multiprocessors, shader cores, ray tracing and tensor cores, memory hierarchy, and how GPU generations improve.
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Computer Hardware
How Power Supplies Work: AC to DC Conversion
How a PC power supply converts AC wall power to regulated 12V, 5V, and 3.3V DC rails, plus rectification, transformers,…
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