Posts by Dr Jan van Niekerk
Random Restarts or Sudden Shutdowns
Learn how to diagnose PC random restarts and sudden shutdowns in South Africa. Follow safe PSU tests, interpret Event ID 41, and know when to replace.
Read MoreRepair or Sell Your Laptop?
Use a simple South African cost vs value framework to decide if you should repair, sell as-is, trade in, or recycle your laptop safely and securely.
Read MoreWindows 11 Laptop Slow? 15 Fixes
Speed up a slow Windows 11 laptop with 15 practical fixes, from updates and startup apps to storage cleanup and safe repairs, plus when to upgrade or sell.
Read MoreLaptop Fan Loud or Grinding
Learn what a loud or grinding laptop fan means, how to check temps, reduce noise safely, spot red flags, and decide whether to repair, replace, or sell in SA.
Read MoreBattery Plugged In Not Charging (Windows 11)
Fix the Windows 11 plugged in not charging issue with quick power checks, smart charging limits, USB-C PD tips, battery reports, and repair triggers.
Read MoreLaptop Screen Black but Power Light On
Laptop screen black but power light on? Use this fast troubleshooting flow to isolate power, screen, Windows, or hardware faults, and know when to book a repair.
Read MoreLaptop Won’t Turn On: 10-Minute Checklist
Follow a fast 10-minute checklist to diagnose a laptop that won’t turn on, spot black-screen vs power faults, and decide repair, warranty, or sell in SA.
Read MoreSell Your Laptop or PC Safely
Sell your laptop or PC safely in South Africa with practical steps for data wiping, scam checks, safe payment confirmation, and a secure meetup handover.
Read MoreMining Hardware Trends 2026
South African mining hardware trends for 2026, focused on J/TH efficiency, air vs hydro vs immersion cooling, and practical noise control for homes and farms.
Read MoreNew vs Used ASIC Miners: What Makes Sense
Decide whether to buy new or used ASIC miners in 2026. Learn SA import VAT basics, load shedding risk planning, and a used-miner inspection checklist.
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