Hardware Installation Problems - Compaq DESKPRO 2000 SERIES Maintenance & Service Manual

2.5.7 Hardware Installation Problems

This section identifies some quick checks for hardware problems.
Problem
A new device is not recognized as part of
the computer system.
The computer supports plug and play, but
the hardware configuration settings in
Computer Setup do not match the settings
in Windows 95 Device Manager.
2-32 Troubleshooting
Table 2-24
Solutions for Hardware Installation Problems
Possible Solutions
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 3.1 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 3.1 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.
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.