CD-ROM drive not found on HP Vectra during setup due to incorrect IRQ.
Cause:
An HP Vectra computer with a DSP sound card and a built-in Adaptec AID6x60 SCSI chip must have the sound card '/Q' switch loaded in CONFIG.SYS in order to recognize the CD-ROM drive.
Solution:
In the 'Control Panel' window, double-click the 'System' icon. Click the 'Device Manager' tab and assign an unused interrupt to the CD-ROM. Open the file Config.sys, and type /Q and the interrupt number after the phrase DEVICE=<drive>:\<path>\DSP16.SYS.
1) Click the 'Start' button to display the 'Start' menu.
2) Select 'Settings' and select 'Control Panel'. (The 'Control Panel' window appears.)
3) Double-click the 'System' icon. (The 'System Properties' dialog box appears.)
The 'System' icon
4) Click the 'Device Manager' tab. (The 'Device Manager' tabbed page appears.)
5) Select the 'Computer' icon. (The 'Computer' icon is highlighted.)
6) Click 'Properties'. (The 'Computer Properties' dialog box appears.)
7) If necessary, select the 'Interrupt request (IRQ)' radio button. (The interrupt assignments and hardware device names appear in the list box.)
The 'Interrupt request (IRQ)' radio button
8) Select an unused interrupt that is supported by the Adaptec SCSI device from the 'IRQ' list box.
NOTE: Refer to the manufacturer's manual for a list of compatible interrupt settings.
9) Click 'OK' to close the 'Computer Properties' dialog box.
10) Double-click the 'SCSI Controllers' icon. (The branch expands, showing all devices.)
11) Select 'Adaptec SCSI device' and click 'Properties'. (The 'Adaptec SCSI device Properties' dialog box appears.)
12) Click 'Remove'. (The 'Confirm Device Removal' dialog box appears.)
13) Click 'Yes'.
14) Click 'OK' to close the 'System Properties' dialog box.
15) Open Config.sys.
16) Locate the following phrase:
DEVICE=<drive>:\<path>\DSP16.SYS
(where <drive> is the letter of the local hard disk and <path> is the directory path to the file DSP16.SYS).
17) Type a space and the following at the end of the phrase:
/Q:<interrupt>
(where <interrupt> is the number of the interrupt assignment).
18) If necessary, repeat steps 1) and 2) to display the 'Control Panel' window.
19) Double-click the 'Add New Hardware' icon. (The 'Add New Hardware Wizard' dialog box appears.)
The 'Add New Hardware' icon
20) Click 'Next'.
21) Select the 'Yes (Recommended)' radio button to let Windows 95 detect the SCSI device, and click 'Next'.
22) Click 'Next'.
NOTE: When Windows 95 has finished detecting the devices, the CD-ROM should appear in 'Device Manager' and be fully functional.
23) Select the 'File' menu and select 'Close' to close the 'Control Panel' window.
