Compaq Deskpro 4000N - Desktop PC, Maintenance & Service Manual

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Compaq Deskpro 4000S and 4000N Personal Computers F-7
Hardware Installation Problems
This section identifies some quick checks for hardware problems.
Table F-6
Solutions for Hardware Installation Problems
Problem Possible Solutions
A new device is not recognized as part
of the computer system.
1. The Computer Setup utility has not been run to configure the new device. Run the
Computer Setup utility.
2. When the system advised you of changes to the configuration, you did not accept
them. Reboot the computer and follow the instructions for accepting the changes.
3. The system may not have automatically recognized the new device. If Windows NT
is installed, run Computer Setup and identify the new device. If Windows 95 is
installed, run Device Manager and identify the device.
4. A Plug and Play board may not automatically configure when added if the default
configuration conflicts with other devices. Use Computer Setup (Windows NT
installed) or Device Manager (Windows 95 installed) to deselect the automatic
settings for the board and choose a basic configuration that doesn’t cause a
resource conflict.
5. The cables for the new external device are loose or the power cables are unplugged.
Check all cables.
6. The power switch for the new external device is not turned on. Turn off the
computer, turn on the external device, and then turn the computer on to integrate
the new device with the computer.
7. If the drive is a secondary drive that has just been installed on the same controller
as the primary drive, verify that the jumpers for both drives are set correctly.
The computer supports Plug and Play,
but the hardware configuration settings
in Computer Setup do not match the
settings in Windows 95 Device
Manager. In Windows 95: when onboard serial devices are assigned to ports other than COM1
or COM2, the configuration is saved statically in CMOS. When the system is rebooted,
the ROM configures the device to the static setting; when Windows 95 loads, it
configures the device to the configuration set via Device Manager. In such cases, the
configuration shown when F10 Setup is run does not match what was set up via
Device Manager.
If these devices must be configured a certain way before Windows 95 loads, then the
serial port devices on the system should only be configured to COM1 or COM2
resources. If the system has two serial devices plus a modem, then the first serial
device can be COM1 or COM2 or disabled, the modem can be COM1 or COM2 or
disabled, and the second serial device can be COM4 or disabled.