ETA System Doctor
Practical guides to cleaning up your browser and keeping a Windows PC running well.
A major Windows update occasionally replaces a working driver with a broken or incompatible one. Here is how to back up your current drivers first, so a bad update is a rollback, not a reinstall.
Read the guide
Downloaded archives get extracted once and then sit there forever, doubling their own space with an unpacked copy next to them. Here is how to find and safely clear that out.
Read the guide
Battery percentage doesn't tell you battery health. Here is how to see your laptop's real capacity loss on Windows, and the daily habits that actually slow that loss down.
Read the guide
A fan spinning up and a sluggish PC usually means one process is pinning the CPU. Here is how to find which one, tell a real problem from normal background work, and fix it.
Read the guide
Defragmenting an SSD is outdated advice that can do more harm than good. Here is what actually keeps a solid-state drive fast — TRIM, health monitoring, and knowing what to leave alone.
Read the guide
Docker images, containers, and WSL's virtual disks grow quietly and almost never shrink back down on their own. Here is where the space actually goes and how to get it back.
Read the guide
Registry cleaners promise a faster PC by removing leftover entries. Here is what the registry actually is, what a cleaner really fixes, and when it's genuinely risky.
Read the guide
A stuck print job or a printer that's simply gone quiet is almost always the Print Spooler service, not the printer itself. Here is the actual fix, in the order that resolves it fastest.
Read the guide
In-game graphics settings only control part of your frame rate. Here is the rest of the checklist — background apps, power plan, drivers, and Game Mode — that actually moves the needle.
Read the guide
Freeing up RAM once fixes the symptom. A memory leak is the actual cause when it comes right back — here is how to identify which app is responsible and what to do about it.
Read the guide
A shortcut with a small arrow overlay and an error on click is pointing at a file that no longer exists. Here is why that happens and the fastest way to clean up a Desktop full of them.
Read the guide
Downloads is the one folder almost nobody manually organizes, and it shows — installers, documents, and images all mixed together going back years. Here is a fast way to actually sort it out.
Read the guide
Years of saving, copying, and re-downloading leaves most drives with the same photos and documents stored two or three times over. Here is how to find them safely — and what to leave alone.
Read the guide
Most "speed up your PC" lists mix genuinely useful fixes with placebo tweaks. Here is what measurably helps, in the order it's worth doing it, and what to skip.
Read the guide
A feature-by-feature comparison of ETA System Doctor and CCleaner — cleaning depth, privacy tools, and pricing — to help you decide which PC cleaner is actually best for you.
Read the guide
Windows 11 blocked on your PC over a TPM 2.0 or CPU compatibility error? Here's how to check what's actually missing — and fix it, most of the time from your BIOS.
Read the guide
A step-by-step Windows 10 to Windows 11 upgrade guide — how to back up first, what actually changes, and how to avoid losing files, settings, or license keys.
Read the guide
A clear, practical checklist of what's actually safe to delete on Windows to free up space — and the handful of files and folders you should never touch.
Read the guide
Temporary internet files build up in four separate locations, not one. How to find and clear all of them on Windows, and which ones are safe to delete.
Read the guide
hiberfil.sys is sized at roughly 75% of your installed RAM and sits on your C: drive permanently. What it does, when you actually need it, and how to reclaim the space.
Read the guide
Windows 11's built-in Disk Cleanup only reaches a fraction of what's actually reclaimable. What it covers, what it never touches, and the one-click way to get the rest back.
Read the guide
Why is my computer running slow? Usually one of seven causes. How to work out which one you have, in the order worth checking, and what actually fixes each.
Read the guide
How to free up RAM on Windows: telling whether memory is really your bottleneck, what genuinely frees it, and why most "RAM booster" tools make things worse.
Read the guide
Game launchers accumulate tens of gigabytes in caches, shader data, and old downloads. What each one is, which are safe to clear, and which will cost you.
Read the guide
Windows.old holds your previous Windows installation and can occupy 20-30 GB. Here is what it is for, when it is safe to remove, and how to delete it properly.
Read the guide