A slow computer can be caused by many things. These steps help you gather information; they won’t identify every hardware or software fault.
Start with simple checks
- Save your work and restart. A restart can clear temporary issues. Save open files first.
- Notice when it feels slow. Is the slowdown constant, limited to startup, or only in one app or website?
- Close apps you recognize. Avoid ending unfamiliar system processes or security tools.
- Check available storage. Use the operating system’s built-in storage settings. Don’t delete files if you are unsure what they do.
- Use trusted updates. Check updates through your device’s normal settings. Avoid unexpected pop-up links and third-party “speed booster” downloads.
- Back up important files. If you can safely access them, make a current backup before a repair or reset.
Do not call a number displayed in a sudden security alert or install a remote-access app at the request of an unsolicited caller. Close the page and contact a provider using a number you already trust.
When to stop troubleshooting
Stop and ask for help if the computer repeatedly shuts down, makes unusual grinding or clicking sounds, shows signs of liquid damage, displays a disk failure warning, or contains files you cannot risk losing. Avoid factory resets or reinstalling the operating system until important files are backed up and you understand what will be erased.
What to tell support
Note the make and model, operating system if known, when the problem began, the steps you already tried, and any exact message. Geek Helpline can then discuss whether remote help or another service option may fit.
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