How-To Guides

How-To Guides | Adhen Prasetiyo

How to Fix and Renew an Expired SSL Certificate on Linux — Let's Encrypt Certbot Guide

our website is showing "Your connection is not private" to every visitor because the SSL certificate expired. If you use Let's Encrypt and Certbot, the fix takes about two minutes. But you also need to figure out why auto-renewal failed and make sure it never happens again. Here's the complete fix.

Mar 12, 2026

How-To Guides | Adhen Prasetiyo

How to Free Up Disk Space on Windows 11 — Find and Remove the Hidden Space Eaters

Your Windows 11 drive is almost full, but you can't figure out where all the space went. It's not your files — it's hidden system data that Windows accumulates over time. Temporary files, old update caches, the hibernation file, and leftover Windows.old folders can eat 20-50GB without you noticing

Mar 7, 2026

How-To Guides | Adhen Prasetiyo

How to Protect Your Important Data from Cyber Attacks — The 3-Layer Defense That Actually Works

You can't stop every data breach. But you can make sure that when a breach happens — and it will happen — your important data survives and your accounts stay locked. Here's a practical, layered defense that protects your digital life without turning you into a paranoid wreck.

Feb 28, 2026

How-To Guides | Adhen Prasetiyo

How to Backup and Restore Windows 11 — System Image, File History, and Restore Points Explained

Windows 11 has three completely different backup systems and most people either use the wrong one or don't use any of them. A System Image saves everything. File History saves your documents. A Restore Point saves your system settings. Knowing which one to use — and when — is the difference between a 10-minute recovery

Feb 27, 2026

How-To Guides | Adhen Prasetiyo

How to Check GPU Health on Windows 11 — Before Your Graphics Card Dies Without Warning

Your GPU doesn't send you a notification before it fails. It just starts dropping frames, flashing weird colors, and crashing your games mid-session. But if you know where to look, Windows 11 has built-in tools that reveal your GPU's real condition — and third-party stress tests that push it hard enough to expose hidde

Feb 27, 2026

How-To Guides | Adhen Prasetiyo

How to Clean Install Windows 11 Using Rufus — No Bloatware, No Microsoft Account, No Hassle

Microsoft's official installer forces a Microsoft account, installs dozens of apps you didn't ask for, and blocks older hardware. Rufus bypasses all of that in one click. Here's the complete guide to doing a truly clean Windows 11 install — from downloading the ISO to the post-install settings you should change immedia

Feb 25, 2026

How-To Guides | Adhen Prasetiyo

How to Check Laptop Battery Health on Windows 11 — And Actually Understand What the Report Tells You

Every guide shows you how to type powercfg /batteryreport. Almost none of them explain what the numbers in the report actually mean. Here's how to generate the battery health report, calculate your exact battery health percentage, read the capacity history trend, and decide whether your battery needs replacing or just

Feb 25, 2026

How-To Guides | Adhen Prasetiyo

How to Check SSD Health and Remaining Lifespan on Windows 11 (Without Third-Party Software)

Want to know if your SSD is dying? Windows 11 has built-in tools to check SSD health, temperature, and remaining lifespan — no extra software needed. Here's how to read the data and what the numbers actually mean.

Feb 14, 2026

How-To Guides | Adhen Prasetiyo

How to Speed Up a Slow Windows 11 PC Without Installing Anything (10 Built-In Tweaks)

Your Windows 11 PC is slow and you don't want to install "system optimizer" junk. Good news — Windows has built-in tools that can double your boot speed and make apps open faster. Here are 10 tweaks using only what's already in your system.

Feb 10, 2026

How-To Guides | Adhen Prasetiyo

How to Create a Bootable Windows 11 USB Drive (Rufus vs Ventoy — Which One and When)

Need a Windows 11 bootable USB? There are 3 tools — Microsoft's official Media Creation Tool, Rufus, and Ventoy. Each has a specific use case. Here's when to use which, including how to bypass TPM and Secure Boot requirements for unsupported PCs.

Feb 8, 2026

How-To Guides | Adhen Prasetiyo

How to Check RAM Health on Windows 11 (Built-In Tool + MemTest86 Guide)

Random BSODs, app crashes, and system freezes? Your RAM might be failing. Windows 11 has a built-in memory diagnostic tool, but it hides the results in Event Viewer where nobody looks. Here's how to run the test AND actually find the results.

Feb 7, 2026