Backup Media And Recovery Options; Wifi Power Cycle; System Error Messages - Dell OptiPlex 7070 Micro Service Manual

Table 6. Diagnostic error messages (continued)
Error messages
TIMER CHIP COUNTER 2 FAILED
UNEXPECTED INTERRUPT IN PROTECTED MODE
X:\ IS NOT ACCESSIBLE. THE DEVICE IS NOT
READY

Backup media and recovery options

It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes
multiple options for recovering Windows operating system on your Dell PC. For more information. see
Media and Recovery Options.

WiFi power cycle

If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be
performed. The following procedure provides the instructions on how to conduct a WiFi power cycle:
NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.

System error messages

Table 7. System error messages
System message
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
CMOS checksum error
CPU fan failure
System fan failure
Hard-disk drive failure
Keyboard failure
No boot device available
54 Troubleshooting
Description
A chip on the system board may be malfunctioning. Run the
System Set tests in Dell Diagnostics.
The keyboard controller may be malfunctioning, or a memory
module may be loose. Run the System Memory tests and the
Keyboard Controller test in Dell Diagnostics or Contact
Dell.
Insert a disk into the drive and try again.
Description
The computer failed to complete the boot routine three
consecutive times for the same error.
RTC is reset, BIOS Setup default has been loaded.
CPU fan has failed.
System fan has failed.
Possible hard disk drive failure during POST.
Keyboard failure or loose cable. If reseating the cable does not
solve the problem, replace the keyboard.
No bootable partition on hard disk drive, the hard disk drive
cable is loose, or no bootable device exists.
Dell Windows Backup