CMOS checksum error — Possible system board failure or RTC battery low. Replace the battery (see the Service Manual at support.dell.com/manuals) or contact Dell (see “Contacting Dell” on page 77).
CPU fan failure — CPU fan has failed. Replace the CPU fan (see the Service Manual at support.dell.com/manuals).
Keyboard failure — Keyboard failure or loose cable.
To replace the keyboard, see the Service Manual at support.dell.com/manuals.
Using Support Tools
No boot device available — No bootable partition on hard drive, the hard drive cable is loose, or no bootable device exists.
•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.
•Enter system setup and ensure that the boot sequence information is correct (see the Dell Technology Guide at support.dell.com/manuals).
No timer tick interrupt — A chip on the system board might be malfunctioning or system board failure. Contact Dell (see “Contacting Dell” on page 77).
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