A keyboard appears on screen every time Windows starts? Windows has two. Untick the On-Screen Keyboard and its sign-in copy in Ease of Access Center, or set the touch keyboard to Never.
Your mouse clicks do nothing in one patch of the screen? An app left an invisible window there. Name it with a PowerShell check, quit it from the tray, or press Alt+F4 on the dead spot.
Your Mac asks again and again whether an app should accept incoming network connections? Remove every copy from Firewall Options, check the app signature, and turn off Media Sharing for mediasharingd.
Your apostrophe or quote key types nothing until you press it again? That is the United States-International layout. Press Windows and Space, pick US, and remove the international layout.
Your monitor’s native resolution is missing from Display settings? Look for Generic Non-PnP Monitor, power cycle the screen, swap the cable, leave Duplicate mode and reset the driver.
Windows says your font is not a valid font file? Check it is a TTF or OTF and unzipped, copy it to your own drive, and start the Windows Firewall service. Work PCs need Install for all users.
Your internal SSD or hard drive shows in Safely Remove Hardware? Turn off SATA hot plug in the BIOS, or add TreatAsInternalPort for Microsoft’s AHCI driver. NVMe drives need a BIOS update.
Windows says Can’t connect to this network while your phone joins fine? Test a second network, read Event ID 8002, then change 802.11n mode or rename the network on the router.
Remote Desktop connects, then shows a black screen? The session is usually alive. Press Ctrl+Alt+End and open Task Manager, reconnect at a smaller size, or clear bitmap caching.
Mapped drive missing from File Explorer or an admin window? Windows keeps two sessions with their own drive letters. Map it in the right one, or set EnableLinkedConnections.