If Remote Desktop suddenly stops working, check whether the computer restarted and grabbed a new IP address. DHCP changes break more RDP sessions than firewall rules do.

If a PC is acting strange after an update, check the default apps. Windows updates sometimes reset file associations and default browsers, which makes it look like something is broken when it’s just been reassigned.

If a user says "the internet is down," try another website first. If Google works but one site doesn’t, it’s not the internet — it’s DNS, the site itself, or cached browser data.

If printing works from one computer but not another, compare the printer port and driver. Most "printer problems" are really driver mismatches or Windows switching ports after updates.

If your computer feels slow after being on for days, check uptime before troubleshooting. Task Manager → Performance → CPU shows how long it’s been running. Long uptimes cause strange issues that a restart fixes instantly.

If something "randomly broke," check the system clock. Incorrect date or time can cause email issues, login failures, certificate errors, and websites to stop loading. A wrong clock breaks more than people realize.

Before you panic about a “broken” app or website, try opening it in a private/incognito window. If it works there, the problem is almost always a bad extension, cached data, or cookies — clearing the site data or disabling extensions usually fixes it in under a minute.

Rebooting once a week prevents a shocking number of “mystery problems.” Think of it as a free tune-up for your computer.