Laptop performing slowly

No one can help here unless you post your model computer and your operating system. Also include any error messages and what changes you have done recently.

Running a complete hardware diagnostic test can help you identify hardware-related problems and provide troubleshooting steps to resolve the issues. Dell offers both online and built-in hardware diagnostic tests, such as the enhanced Pre-boot System Assessment (ePSA).

Running Dell Pre-boot System Assessment or enhanced Pre-boot System Assessment (Dell PSA or ePSA)

1. Restart your Dell computer.
2. When the Dell logo appears, press the F12 key to enter One-time Boot Menu.
3. Use the arrow keys to select Diagnostics, and press Enter key on the keyboard.
4. Follow the on-screen prompts and respond appropriately to complete the diagnostics.
   If the test fails, write down the error code and validation code.

If an error code appears, either:

• Use Dell Interactive Support Agent (English only) to get information about the ePSA or PSA diagnostic error codes. Enter the 1000-XXXX or 2000-XXXX code into the search bar at the bottom.
• Browse to the SupportAssist Pre-Boot System Performance Check page to get more information about ePSA or PSA diagnostic error codes.