パソコン・ソフトCan't Use Excel's COPILOT Function? Requirements, Pricing, Uses, and Pitfalls Explained [Microsoft 365]So, Excel's COPILOT function is getting a lot of attention, but plenty of people still can't use it. Let's walk through the license and channel requirements, what it can and can't do, how it's different from the ChatGPT add-in, and the rate limits to watch out for.2026.03.197 min中村 健太
パソコン・ソフトExternal HDD Not Recognized by Your TV? FAT32 vs. NTFS vs. exFAT and How to Format It, With Size-Specific TipsIf your TV won't recognize an external HDD, the issue is often the drive's format. Here's how FAT32, NTFS, and exFAT differ, what to choose by drive size, and how to format it in Windows 11.2026.03.197 min中村 健太
スマホ・アプリPhone Not Charging or Charging Slowly? 7 Cable, Charger, and Battery Causes to Check Now (iPhone & Android)If your phone won't charge or it's charging painfully slowly, the problem is usually the cable, charger, or phone itself. Here's how to narrow it down and try 7 easy fixes before paying for repairs.2026.03.198 min佐藤 理香
パソコン・ソフトPC Won't Shut Down? 6 Causes and the Safe Way to Force Shutdown in Windows 11If your Windows 11 PC won't shut down, there are six likely causes: update bugs, Fast Startup, app conflicts, USB devices, static buildup, and more. Here's how to troubleshoot it and force shutdown safely without putting your data at unnecessary risk.2026.03.197 min中村 健太
仕事・副業Did Working From Home Raise Your Electric Bill by ¥3,000 a Month? 7 Ways to Cut Telework Electricity Costs and Ask Your Company for HelpSo, is it normal for telework to add ¥3,000 a month? Let’s sort through smart fixes, from air conditioner tweaks to asking for a stipend.2026.03.188 min山田 結衣
パソコン・ソフトDid a “Your PC Is Infected” Warning Suddenly Pop Up and Won’t Go Away? How to Spot and Close Fake Security Alerts (Tech Support Scams) [Windows 11]Ah, that warning screen is a classic scammer trick. Let’s walk through how to close it with Esc or Task Manager, what to do if you called, and how to keep it from coming back.2026.03.187 min中村 健太
スマホ・アプリDid All Your Phone Bookmarks Disappear? 5 Reasons Chrome and Safari Favorites Vanish and How to Restore Them [iPhone/Android]So your phone favorites suddenly vanished? It happens. Let’s walk through the five common causes in Chrome and Safari, plus the fixes that can help bring them back.2026.03.186 min佐藤 理香
パソコン・ソフトBlurry Text or Smeared App Displays in Windows 11? How to Fix Display Scaling the Right WayIf text looks blurry in Windows 11, display scaling may be the reason. Let’s walk through six fixes, from switching back to the recommended scaling value to turning on Windows’ automatic app correction.2026.03.186 min中村 健太
パソコン・ソフトExcel Macro Not Running or Stopping With an Error? 6 Causes and Fixes VBA Beginners Can Try [Microsoft 365]So your Excel macro suddenly stopped working? Let’s walk through six common issues VBA beginners often run into, including security blocks, file formats, and mismatched sheet names—and how to fix them.2026.03.188 min中村 健太
パソコン・ソフトCan’t Sign In on Windows 11 Because of Error 0x800704cf? 5 Causes and Fixes for Microsoft Store and OneDriveHaving trouble signing in on Windows 11 because of error 0x800704cf? Let’s walk through the five most common causes and how to fix them.2026.03.177 min中村 健太
AI・チャットボットCan't edit slides made in Google NotebookLM? How to revise with prompts, export to PPTX, and customize audio [2026 Guide]Good news: NotebookLM's slide editing got a major fix in February. Let's walk through prompt-based revisions, PPTX export, and audio customization.2026.03.177 min高橋 湊
パソコン・ソフトDid Cleaning Your PC Make It Start Freezing? 5 Reasons Internal Cleaning Can Make a Computer Unstable and How to Fix ItIf your PC started freezing or acting unstable right after cleaning, there are five likely causes. From loose RAM to static damage, here’s how to check what went wrong and fix it safely.2026.03.179 min中村 健太
