Dell OptiPlex 760, Service Manual

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Hard-disk read failure — Possible hard drive failure during hard-drive boot test (see Contacting Dell for assistance).
Keyboard failure —
Keyboard failure or keyboard cable loose (see Keyboard Problems ).
No boot device available — The system cannot detect a bootable device or partition.
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If the floppy drive is your boot device, ensure that the cables are connected and that a bootable floppy disk is in the drive.
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If the hard drive is your boot device, ensure that the cables are connected and that the drive is installed properly and partitioned as a boot
device.
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Enter System Setup and ensure that the boot sequence information is correct (see System Setup ).
No timer tick interrupt — A chip on the system board might be malfunctioning or motherboard failure (see Contacting Dell for assistance).
Non-system disk or disk error — Replace the floppy disk with one that has a bootable operating system or remove the floppy disk and restart the computer.
Not a boot diskette — Insert a bootable floppy disk and restart your computer.
NOTICE – Hard Drive SELF MONITORING SYSTEM has reported that a parameter has exceeded its normal operating range. Dell recommends that you
back up your data regularly. A parameter out of range may or may not indicate a potential hard drive problem. —
S.M.A.R.T error, possible HDD failure. This feature can be enabled or disabled in the system setup.
Hardware Troubleshooter
If a device is either not detected during the operating system setup or is detected, but incorrectly configured, you can use the Hardware Troubleshooter to
resolve the incompatibility.
Windows XP:
1. Click Start ® Help and Support .
2. Type
hardware troubleshooter
in the search field and press <Enter> to start the search.
3. In the Fix a Problem section, click Hardware Troubleshooter .
4. In the Hardware Troubleshooter list, select the option that best describes the problem and click Next to follow the remaining troubleshooting steps.
Windows Vista:
1. Click the Windows Vista start button , and click Help and Support.
2. Type
hardware troubleshooter
in the search field and press <Enter> to start the search.
3. In the search results, select the option that best describes the problem and follow the remaining troubleshooting steps.
Dell Diagnostics
When to Use the Dell Diagnostics
If you experience a problem with your computer, perform the checks in Solving Problems , and then run the Dell Diagnostics before contacting Dell for
assistance.
Start the Dell Diagnostics from your hard drive or from the Drivers and Utilities media provided with your computer.
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best
practices information, see the Regulatory Compliance Homepage on www.dell.com at www.dell.com/regulatory_compliance.