パソコン・ソフトWindows 11でメモリ16GBなのに重い？メモリ使用率が高い原因6つと今すぐ試せる節約設定Windows 11でメモリ16GBを搭載しているのにメモリ使用率が高く動作が重い場合の原因と対処法。配信の最適化のメモリリーク、バックグラウンドアプリ、ブラウザのタブ、スタートアップ、Windows Updateの不具合、SysMainの設定変更方法をわかりやすく解説。2026.03.14ワカラン？編集部
パソコン・ソフトパソコンが壊れてパスワードが全部わからない？ブラウザ保存のID・パスワードを別の端末から確認する方法と備えパソコンが壊れて起動できないとき、ブラウザに保存していたID・パスワードを別の端末から確認する方法をChrome・Edge・Safari別に解説。同期がオフだった場合の対処法と、今からやっておくべき5つの備えも紹介します。2026.03.14ワカラン？編集部
パソコン・ソフトDoes your PC become unstable or freeze repeatedly after Windows Update? How to identify and remove the causative update program [Windows 11]Explains how to identify and uninstall the update program that causes it when your PC freezes or becomes unstable after Windows Update. We have summarized the three removal steps: Settings screen, Command Prompt, and PowerShell, and what you should do after removal.2026.03.13ワカラン？編集部
パソコン・ソフトCan't log in to Teams/Sign in loop? Causes of each error code and solutions you can try now [2026 edition]Explains the causes and solutions when you cannot log in to Microsoft Teams or the sign-in loop occurs. We will introduce solutions for each error code, such as error code 0xCAA20003 and 0xCAA82EE2, as well as cache deletion and reinstallation procedures in an easy-to-understand manner.2026.03.11ワカラン？編集部
パソコン・ソフトAre emails from your own domain not arriving in Gmail? 5 reasons why emails are marked as spam and how to check SPF, DKIM, and DMARC settingsExplaining the reasons why emails from your own domain are sorted into Gmail's spam folder and how to deal with them. From how to check SPF, DKIM, and DMARC settings to countermeasures that can be taken on the receiving side. With the strengthening of Gmail sender guidelines in 2024, there is an increased risk that unsupported emails will no longer be delivered.2026.03.11ワカラン？編集部
パソコン・ソフトWhat is ChatGPT for Excel? Explaining how to use the official add-in, what it can do, and when to use it in Japan [2026 version]An easy-to-understand explanation of how to use the "ChatGPT for Excel" add-in, which was officially announced by OpenAI in March 2026, what it can do, compatible plans, and when it can be used in Japan. We will also introduce the differences between third-party products and alternative methods that people in Japan can now use.2026.03.10ワカラン？編集部
パソコン・ソフトCan't hear the first word in a Teams meeting? Can't hear the first word? 6 causes and how to review audio settings you can try now [Windows 11]The reason why you can't hear the first word in a Teams meeting or the voice is choppy is often due to the USB selective suspend or Teams noise suppression settings. We will explain six causes and solutions in an easy-to-understand manner.2026.03.05中村 健太
パソコン・ソフトDo you get an error every time you open Excel? 6 causes of "Cannot function properly" and solutions you can try nowExplains the causes and solutions for the error that displays "Cannot function properly" or "Has stopped working" every time you open Excel. We will introduce easy-to-understand methods that you can try right away in your Windows 11 environment, such as disabling add-ins, starting in safe mode, and repairing Office.2026.03.05中村 健太
パソコン・ソフトHow to write Excel VLOOKUP and IF using Power Query? M language conversion quick reference table for frequently used functions [for beginners]An explanation for beginners on how to write 10 frequently used functions such as Excel's VLOOKUP, IF, LEFT, and MID in Power Query (M language), with a correspondence table and specific examples. We also introduce the steps to add custom columns and tips on how to use them properly.2026.03.05中村 健太
パソコン・ソフトAre your eyes tired or having trouble sleeping from your computer screen? Windows 11 night mode and 5 blue light countermeasuresBlue light and screen settings may be the reason why your eyes get tired from using the computer and you can't sleep at night. We will explain in an easy-to-understand manner 5 ways to take measures that can be taken without spending a lot of money, such as how to set Windows 11's night mode/dark mode, brightness adjustment, and the 20-20-20 rule.2026.03.05中村 健太
パソコン・ソフトIs the image pasted in Excel not displayed or marked as a cross? 6 causes and solutions you can try now [Windows]Explains 6 causes and solutions for troubles where images pasted in Excel are not displayed or marked with a cross (x). We have summarized ways that even beginners can easily fix problems such as object display settings, broken links, and image format problems.2026.03.04中村 健太
パソコン・ソフトCan't print with printer/remains offline? 7 causes and solutions you can try now [Windows 11]Explains 7 causes and solutions for troubles where the printer cannot print or appears offline in Windows 11. We will show you how to do it yourself, including turning the power off and on, checking Wi-Fi, restarting the spooler, and reinstalling the driver.2026.03.04中村 健太
