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Viruses & malware
- Does my computer have a virus? Signs to check calmly The signs that really point to malware, the ones that usually do not, and one safe first check.
- Remove a virus with Microsoft Defender: full scan and offline scan Run a full scan, then an offline scan, deal with what they find and confirm the PC is clean.
- Start Windows 11 in Safe Mode when something blocks a scan Three ways into Safe Mode, what it is for, and how to get back out again.
- Browser homepage or search engine changed by itself? Put it back Remove unwanted extensions and notification spam, then reset Chrome, Edge or Firefox.
- Files locked and a ransom note on screen: first steps Disconnect, do not pay, record what you see, look for a free decryptor and restore from backup.
Scams & fake warnings
- A pop-up says my computer is infected. Is it real? How to recognize a fake warning, close it safely, and stop it from coming back.
- An antivirus renewal invoice you did not order? Check it safely Fake McAfee and Norton invoices are a common scam. How to check your real account without the email.
- I let a stranger connect to my computer. What to do now Cut the connection, protect your bank and email, remove their software and report it.
Antivirus software
- McAfee says “You’re not protected” or will not update Check the subscription, run an update, turn real-time scanning back on and reinstall cleanly.
- Remove McAfee completely, including the leftovers Uninstall through Windows, then use McAfee’s own removal tool if anything is left behind.
- McAfee plans explained in plain English What the main McAfee plans include, what to check about renewal prices, and when Defender is enough.
- Norton will not open, update or scan: steps to try Restart, run LiveUpdate, check the subscription, then repair or reinstall Norton safely.
- Remove Norton completely with Windows and Norton’s own tool Uninstall through Windows Settings, then use Norton’s own removal tool for anything left behind.
- Windows Security says virus protection is off: turn it back on Get real-time protection running again, especially after removing McAfee or Norton.
- Do I need to pay for antivirus? Defender, McAfee and Norton compared What the free Microsoft Defender already does, what paid suites add, and how to decide.
Everyday PC problems
- Windows 11 running slowly? Calm checks before you buy anything Startup apps, storage, updates and background activity, checked in a sensible order.
- Printer says “offline” in Windows: a steady checklist Work through the connection, the print queue and the printer settings, in that order.
- Wi-Fi says connected but nothing loads A short sequence that tells a problem on your PC apart from one with your router or provider.