Speed up your computer in 10 minutes

This is the short version, for when the machine is slow right now and you do not want to read about disk controllers. Everything here uses tools you already have. Nothing here requires a download, a restart, or a credit card.

Minutes 1–2: look before you touch anything

Open Task Manager on Windows with Ctrl + Shift + Esc, or Activity Monitor on macOS. Sort by Memory.

You are answering one question: is anything close to using all of your RAM? On a Mac, the Memory Pressure graph answers it directly — yellow or red means you have found your problem. On Windows, high memory combined with steady disk activity means the same thing.

Nine times out of ten the name at the top of that list is your browser.

Minutes 3–4: release the memory your tabs are holding

Not close them — release them. Chrome can hand a tab's memory back to the system while leaving the tab in place, reloading the page when you click it again. The tab keeps its position, its title and its place in your head.

Doing this to the three or four heaviest tabs typically returns a couple of gigabytes on a browser that has been open all day. This is the largest single improvement available in the ten minutes. The full explanation, if you want it afterwards.

Minute 5: kill the one process that is pinning a core

Back in the task manager, sort by CPU instead. If something sits near the top while you are doing nothing, that is a stuck process — often an update service, a sync client, or a single browser tab misbehaving.

With Chrome focused, Shift + Esc opens Chrome's own task manager, which attributes CPU to individual tabs. That is how you find the one page responsible without closing the browser.

Minutes 6–7: cut the login list

Windows: Task Manager → Startup apps. macOS: System Settings → General → Login Items. Turn off the things you recognise and do not need running from the moment you sit down. Leave anything you cannot identify.

This one does not help immediately — it helps every day after today.

Minutes 8–9: check the drive is not full

If free space is under about 10%, that alone will make the whole system sluggish. Empty the trash, clear Downloads, and use the built-in storage tools. You are aiming to get back to roughly 15% free, not to do a deep clean.

Minute 10: make it stay fixed

Everything above is undone by a week of normal use. Tabs accumulate again, because that is what tabs do.

The one durable change is automating the part you just did by hand: scheduled cleanup that releases heavy, unused tabs in the background, skipping anything you have marked as protected. Then this stops being a thing you notice.

If none of that worked

Then your problem is not memory, and ten minutes was never going to fix it. A machine that is uniformly slow from boot is usually a disk problem; one that starts fast and degrades over an hour is overheating. Telling the four causes apart takes another two minutes and points you at the right repair.