Dell OptiPlex 755 Quick Reference Manual page 63

Starting the Dell Diagnostics From the Drivers and Utilities CD (Optional)
1 Insert the Drivers and Utilities CD (optional).
2 Shut down and restart the computer.
When the DELL logo appears, press <F12> immediately.
If you wait too long and the Windows logo appears, continue to wait until
you see the Windows desktop. Then shut down your computer and try
again.
NOTE:
The next steps change the boot sequence for one time only. On the next
start-up, the computer boots according to the devices specified in system setup.
3 When the boot device list appears, highlight SATA CD-ROM Device and
press <Enter>.
4 Select the SATA CD-ROM Device option from the CD boot menu.
5 Select the Boot from CD-ROM option from the menu that appears.
6 Type 1 to start the Drivers and Utilities CD menu.
7 Type 2 to start the Dell Diagnostics.
8 Select Run the 32 Bit Dell Diagnostics from the numbered list. If
multiple versions are listed, select the version appropriate for your
computer.
9 When the Dell Diagnostics Main Menu appears, select the test you want
to run (see "Dell Diagnostics Main Menu" on page 63).
Dell Diagnostics Main Menu
1 After the Dell Diagnostics loads and the Main Menu screen appears, click
the button for the option you want.
Option
Express Test
Extended Test
Function
Performs a quick test of devices. This test typically takes
10 to 20 minutes and requires no interaction on your part.
Run Express Test first to increase the possibility of tracing
the problem quickly.
Performs a thorough check of devices. This test typically
takes an hour or more and requires you to answer
questions periodically.
Quick Reference Guide
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