We Bust the 20 Greatest Windows and PC Myths of All Time
Over the years, we’ve heard just about every computer rumor, legend, and “neighbor’s cousin’s advice” you can think of. The tech world moves so fast that a bit of advice from the Windows XP days gets twisted, passed down, recycled, and suddenly becomes a bad tip for Windows 11.
Today, we are going to play Mythbusters. We’ve compiled a list of the 20 Greatest Windows and PC Myths of All Time.
Today, Darcy and I will be your local “Mythbusters” and bust these myths once and for all, so you can stop wondering and start enjoying your PC!
1. Leaving your Computer On Overnight is Terrible for It
Modern computers are designed to handle being left on. In fact, leaving them on allows Windows to run its automatic maintenance, security scans, and updates while you sleep, preventing them from interrupting your workday. (Just make sure your settings are configured so your screen dims so it isn’t drawing full power all night!)
2. Turning Your PC On and Off Constantly Destroys It
On the flip side, some people think rebooting damages components due to the “surge” of power. Modern power supplies are incredibly smart and smooth out power delivery perfectly. Rebooting is actually healthy because it flushes your system’s RAM and clears out background digital clutter.
3. You Must “Safely Eject” a USB Flash Drive Every Single Time
Remember the panic of pulling a flash drive out without clicking “Safely Remove Hardware”? In modern versions of Windows, a feature called “Quick Removal” is enabled by default. As long as you aren’t actively saving or copying a file to the drive, you can just yank it out.
4. “One-Click” Speed-Up Software Will Fix PC Problems and Speed Up Your PC
This is one of the most dangerous scams on the internet today. You see an ad or a pop-up claiming your PC is infected or running slow, prompting you to download a program that promises a “One-Click Fix.” Once installed, it flashes scary red warnings claiming you have thousands of “critical errors” and demands payment to fix them. These programs are predatory scams that slow your PC down, install bloatware, and can completely break Windows. Avoid them like the plague!
5. Defragging Your Hard Drive Every Week is Essential
If your computer uses a modern Solid State Drive (SSD)—which almost all PCs do now—you should never defragment it. Defragging is for old-school, spinning mechanical hard drives. Running a defrag on an SSD causes unnecessary wear and tear, reducing its lifespan. Windows handles SSD optimization automatically.
6. Emptying the Recycle Bin Permanently Erases the Data
Simply hitting “Empty Recycle Bin” or formatting a drive doesn’t actually wipe the data. It just tells Windows that the space is now available to be written over. Until new files take their place, that old data can easily be recovered using free software.
7. Having Two Antivirus Programs Installed Doubles Your Protection
This is a recipe for disaster. Running two real-time antivirus programs at the same time will choke your PC. They will fight each other for system resources, flag each other as threats, and often lock up Windows entirely. Stick to one good, trusted security solution.
8. The “Refresh” Button on Your Desktop Speeds Up Windows
We’ve all seen people right-click their desktop and hit “Refresh” five times in a row, hoping it cleans the memory. All this button does is tell the screen to redraw the desktop icons to ensure they are showing the correct file layout. It does not touch your RAM or speed up performance by even a single percent.
9. Closing Background Apps in Windows Always Frees Up Memory
Windows 11 is highly sophisticated at managing RAM. If an app is sitting open in the background doing nothing, Windows automatically compresses its memory or shifts it aside. Constantly force-closing and restarting your daily apps actually forces your processor to work harder, slowing you down.
10. High-End, Expensive HDMI Cables Give You Superior Picture Quality
Unlike old analog TV cables, digital cables pass data in 1s and 0s. The signal either gets there or it doesn’t. A $10 HDMI cable from the local store will display the same digital picture and sound quality on your monitor as a $100 gold-plated cable. Save your hard-earned money!
11. Incognito Mode Makes Your Online Activity Completely Anonymous
“Private Browsing” or “Incognito Mode” only does one thing: it stops your local computer from saving your browsing history, cookies, and form data. It does not hide your activity from your network, your employer, or the websites you visit.
12. If Your Internet is Slow, Your Computer Most Likely Has a Virus
While malware can slow down a PC, slow internet is rarely caused by a virus. More often than not, it is due to an aging router that can’t handle modern broadband speeds, or a wireless network card inside the PC that is starting to fail.
13. Deleting the “Prefetch” or “Temp” Folders Makes Windows Blazing Fast
Many internet “gurus” tell users to go into the Windows system files and wipe out the Prefetch or Temp folders to gain speed. This usually has the opposite effect! Windows uses those folders to store temporary launch data so your favorite programs open faster. Wiping them means programs will load more slowly the next time you open them.
14. VPNs Keep My Browsing Private and Protect Me from Malware, Phishing, and Identity Theft, Too!
A VPN is a privacy tool, not a security shield. It creates a secure, encrypted tunnel between your device and the internet—hiding your IP address and shielding your data from snoops on public Wi-Fi. However, it cannot protect you from your own clicks.
A VPN only encrypts your data stream; it doesn’t scan files. If you download an infected file, a VPN will happily deliver that virus to your device securely.
Phishing relies on deception. If you click a fake link to a spoofed bank website, your VPN will gladly and privately take you right to the scammers.
Most identity theft happens via corporate data breaches or weak passwords. A VPN protects data in transit, but if you type your Social Security number into a sketchy site, the scammers still get it.
A VPN protects your connection, not your behavior.
15. More RAM Doesn’t Help Windows (The Multitasking Myth)
Some folks think 8 GB of RAM is plenty for anything. The reality is that Windows loves room to breathe. When you step up to 16 or 32 GB, Windows changes how it behaves—it aggressively caches your background programs and browser tabs directly into memory. More RAM means true multitasking power and a much smoother PC.
16. Cookies Are Dangerous Spyware Files
Cookies are just plain text files. They cannot run programs, execute code, or give your computer a virus. They remember things like your login state or what you left in an online shopping cart, so you don’t have to type it in again. Lots of people make lots of money from people who buy into this myth.
17. Magnets Will Instantly Erase Your Computer
Unless you are using a massive, industrial-grade electromagnet, a standard kitchen or refrigerator magnet will not harm your modern computer or SSD. This myth comes from the old days of floppy disks and older mechanical drives, which were highly sensitive to magnetic fields.
18. Dusting Your Keyboard With Compressed Air While It’s On is Fine
Always turn your device off first! Blasting compressed air into a live keyboard can cause a static discharge or force conductive dust particles beneath the keys, potentially shorting out small electrical contacts.
19. Macs Are Inherently Safer Than Windows PCs
This old legend just won’t die. While Windows used to be targeted more simply because there were more Windows PCs on earth, cybercriminals target Macs every single day now. Security comes down to safe user habits, not the brand of your computer.
20. “ReadyBoost” using a USB Thumb Drive is a Great Way to Speed Up Windows 11
Back in the Windows Vista and Windows 7 days, Microsoft introduced “ReadyBoost,” which let you plug in a flash drive to act as extra memory. Some people still try to use this today. On a modern Windows 10 or 11 computer with an SSD, ReadyBoost does absolutely nothing because your internal drive is already vastly faster than any USB thumb drive.
The Ultimate Cloudeight Truth
As with most everything in life, knowledge is power. Stay educated by always being aware of who you can trust and where you can find the most trusted information.
Now that you know the truth about these twenty myths, you can navigate Windows with a lot less worry.
Do you have a rumor or some sketchy tech advice you’ve been wondering about? Let us know!
And as Darcy would say…”Happy Computing”!