Alongside the apps you can see running, Windows quietly operates dozens of background "services" — small processes that handle things like printing, Bluetooth, fax support, and remote access. Many of these are essential, but a fair number exist purely to support hardware or features you don't actually use, and each one takes a small slice of CPU time and memory.
Key takeaway: A handful of genuinely unused Windows services can be safely set to "Manual" or "Disabled" to free up background resources, but core system services should always be left alone.
Before you start: Only change services you're confident you don't need, and never touch anything with "system" appearing central to its description without researching it first. Create a restore point before you begin.
Opening the Services console
- Press the Windows key and R together to open the Run box.
- Type services.msc and press Enter.
- The Services window lists every service with its current status (Running or blank) and its Startup Type (Automatic, Manual, or Disabled).
- Double-click any service to see its full description in the properties window — always read this before changing anything.
Services that are commonly safe to set to Manual
"Manual" is a gentler choice than "Disabled" — the service simply won't start automatically at boot, but Windows can still launch it if something genuinely needs it. This makes Manual the safer option for anything you're not 100% sure about.
- Print Spooler — only needed if you own a printer. Safe to set to Manual if you never print, but leave it Automatic if you do.
- Fax — almost nobody uses this in 2026; safe to set to Manual on most PCs.
- Bluetooth Support Service — set to Manual only if your PC has no Bluetooth hardware or you never use it.
- Windows Search — improves file search speed but uses background CPU indexing. Safe to disable on PCs where you rarely search for files, though it will make searches slower.
- Remote Registry — disabled by default on most home PCs already; leave it that way unless IT support tells you otherwise.
Changing a service's startup type
- Right-click the service and choose Properties.
- Use the "Startup type" dropdown to choose Manual or Disabled.
- Click Stop if the service is currently running and you want to stop it immediately too.
- Click Apply, then OK.
- Restart your PC to confirm nothing you rely on has stopped working.
| Setting | Behaviour | Best for |
|---|---|---|
| Automatic | Starts every boot, whether needed or not | Core Windows and hardware services |
| Manual | Starts only when something requests it | Occasionally used features like printing or faxing |
| Disabled | Never starts, even if requested | Features you're certain you'll never use |
Tip: If you're unsure what a service does, search its exact name online rather than guessing from the short description — many have near-identical names but very different jobs.
Services best left strictly alone
It's just as useful to know what not to touch. Services such as Windows Update, Windows Defender Antivirus Service, DHCP Client, DNS Client, and anything with "Plug and Play" in its name are core to how Windows functions day to day, and disabling them can cause anything from a broken internet connection to an inability to install future updates. Similarly, avoid touching services tied to your specific laptop's touchpad, fingerprint reader, or graphics switching feature (common on gaming laptops with dual graphics chips), as these are often more integrated with the hardware than their generic-sounding names suggest.
A reasonable rule of thumb: if a service's description mentions "required" or lists multiple other Windows components as dependent on it in the Properties window's Dependencies tab, leave it set to Automatic. The services genuinely worth touching for performance reasons on a home PC are a fairly short list, and it's better to leave ten services alone than to disable one you needed.
Frequently asked questions
- Will disabling services really speed up my PC?
- The effect per service is usually small, but on an older or lower-spec machine, trimming several unused ones together can produce a noticeable improvement in responsiveness.
- What's the difference between Manual and Disabled?
- Manual lets Windows start the service automatically if another process needs it; Disabled blocks it from starting under any circumstance, which can cause errors if something else depends on it.
- Can I undo a service change?
- Yes, just reopen services.msc, right-click the service, and change the Startup type back to Automatic.