Using Support Tools
NOTE: If the message you received is not listed in the following examples, see the documentation for either the operating system or the program that was running when the message appeared. Alternatively you could see the Service Manual on the Dell Support website at support.dell.com or see “Contacting Dell” on page 53 for assistance.
Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help
in resolving this problem, please note this checkpoint and contact Dell Technical Support — The computer failed to complete the boot routine three consecutive times for the same error. See “Contacting Dell” on page 53 for assistance.
CMOS checksum error — Possible motherboard failure or RTC battery low. Replace the battery. See “Contacting Dell” on page 53 for assistance.
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CPU fan failure — CPU fan has failed. See “Contacting Dell” on page 53 for assistance.
No timer tick interrupt — A chip on the system board might be malfunctioning or there may be a system board failure. See “Contacting Dell” on page 53 for assistance.
USB over current error — Disconnect the USB device. Your USB device needs more power for it to function properly. Use an external power source to connect the USB device, or if your device has two USB cables, connect both of them.
Hardware Troubleshooter
If a device is either not detected during the operating system setup or is detected