ETA System Doctor
Practical guides to cleaning up your browser and keeping a Windows PC running well.
A completed Windows Defender scan gives you a status and sometimes a detection, but the report itself is easy to skim past without understanding. Here is how to actually read it.
Read the guide
Windows Defender Firewall is on by default, but "on" and "protecting you" aren't the same thing. Here is how to check its real status and find rules that shouldn't be open.
Read the guide
Rootkits are built to hide from the tools that would normally find them. Here is what actually works for detection, and why a standard antivirus scan often isn't enough on its own.
Read the guide
Putting every password in one place sounds risky until you compare it to the alternative. Here is an honest look at password manager security, local vs. cloud, and what actually goes wrong.
Read the guide
Windows stores every WiFi password you've ever connected with, retrievable by anyone with a few minutes of access to your PC. Here is what that actually exposes and how to lock it down.
Read the guide
Adware and junkware are rarely the payload of a deliberate attack — they usually ride along with something you actually meant to install. Here is how to find and remove them.
Read the guide
A connection problem could be your router, your ISP, or DNS resolution specifically — and the fix is different for each. Here is how to actually narrow it down instead of guessing.
Read the guide
A digital signature is a verifiable claim about who published a piece of software and whether it's been tampered with since. Here is how to check it on Windows, and what it does and doesn't guarantee.
Read the guide
A slow WiFi connection with a strong signal is usually a congestion problem, not a signal problem. Here is what WiFi channel congestion actually is and how to fix it.
Read the guide
Deleting a file and emptying the Recycle Bin doesn't erase the data — it just forgets where it is. Here is what actually happens, and when secure file shredding genuinely matters.
Read the guide
A USB drive can be a lot more than storage — it can present itself as a keyboard and type commands the moment it's plugged in. Here is what that risk actually looks like and how to reduce it.
Read the guide
A license key emailed at purchase and never saved anywhere else is one lost email away from a real problem. Here is where license keys actually need to live, and how to find ones you've already lost track of.
Read the guide
Recent campaigns of malicious Chrome extensions have hit tens of millions of installs. Here's what they actually do, and exactly how to check whether yours are safe.
Read the guide
A two-minute check most people never run. Here's how to see if your email or password has already shown up in a data breach — and exactly what to do if it has.
Read the guide
Windows 10 ESU keeps security patches coming through October 2027 — for free, for points, or for $30. Here's what you actually get and whether it's worth it.
Read the guide
Ransomware locks your files and demands payment with no guarantee of recovery. Here's a practical, layered plan to protect against it — before you ever need it.
Read the guide
Windows 10 no longer gets free security patches from Microsoft. If you're not ready to upgrade yet, here's exactly how to keep an unsupported PC safe in the meantime.
Read the guide
DNS hijacking silently redirects your traffic to fake sites. Here's how to detect it — checking your DNS server, hosts file, and router — before it costs you.
Read the guide
How to check whether a link or website is safe before you click it, the manual tools that work, and why real-time protection catches what manual checks miss.
Read the guide
A malware scan removes what it finds today. Here's the full removal process, why reinfection happens so often, and how to actually keep a PC clean afterwards.
Read the guide
The hosts file overrides DNS for your whole machine, which makes it a favourite target for hijackers. How to read yours, spot tampering, and clean it safely.
Read the guide
How to manage browser extensions safely: auditing what is installed, understanding what the permissions allow, and deciding what is worth keeping.
Read the guide
Changed homepage, unfamiliar search engine, redirects you did not ask for. How browser hijackers get in, how to remove one, and how to keep it out.
Read the guide