Find the bottleneck first
A slow computer may struggle at startup, while browsing, or only inside one application. Note when the delay starts and whether it affects every program. Open Task Manager during the slowdown and compare CPU, memory and disk activity. Save your work before changing settings; a restart also helps separate a temporary problem from a recurring one.
Seven changes to try
- Restart and retest the same task with fewer applications open.
- Review startup applications and disable optional ones you recognize. Keep security and essential device services enabled.
- Check storage and remove files you no longer need after confirming a backup.
- Install operating-system updates and obtain device drivers through the manufacturer.
- Reduce browser tabs and remove extensions you do not use.
- Run your security software's scan if there are unexpected programs or redirects.
- Check whether memory, storage or cooling limits the workload before choosing an upgrade.
Change one thing at a time
Repeat the original task after each change and record the result. This makes it easier to identify the useful fix and reverse an unnecessary change. Registry cleaners and unfamiliar performance utilities can introduce new problems; built-in tools usually provide a better starting point.
When to request support
Share the computer model, operating system, affected application and Task Manager observations. If the drive disappears, makes unusual sounds or repeatedly reports errors, prioritize your files and stop repeated stress tests.
For device-specific or current product instructions, see Microsoft: Windows performance.
Need help with your own device?
Describe the problem with the model, symptoms and checks already tried. For related help, explore computer service or remote support.
