Dell Technology Guide
Page 272
... status. Some desktop computers have diagnostic lights. Your desktop or laptop computer may need to be used to run a more complete system test to evaluate your computer. 272 Troubleshooting With the Dell Diagnostics, the computer runs the Pre-boot System Assessment (PSA), a series of initial tests of the troubleshooting tools you may display...
... status. Some desktop computers have diagnostic lights. Your desktop or laptop computer may need to be used to run a more complete system test to evaluate your computer. 272 Troubleshooting With the Dell Diagnostics, the computer runs the Pre-boot System Assessment (PSA), a series of initial tests of the troubleshooting tools you may display...