Control panel message Description Recommended action
3. Back up contents and replace hard drive.
302-Hard Disk 2: SMART Hard Drive Detects 
Imminent Failure
Hard drive is about to fail. (Some hard drives 
have a hard drive rmware patch that will x an 
erroneous error message.)
1. Determine if hard drive is giving correct 
error message. Run the Drive Protection 
System test under using F2 Diagnostics 
when booting the computer.
2. Apply hard drive rmware patch 
if applicable. (Available at 
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
309 – 30C: Hard Disk 3–6: SMART Hard Drive 
Detects Imminent Failure
Hard drive is about to fail. (Some hard drives 
have a hard drive rmware patch that will x an 
erroneous error message.)
1. Determine if hard drive is giving correct 
error message. Run the Drive Protection 
System test under using F2 Diagnostics 
when booting the computer.
2. Apply hard drive rmware patch 
if applicable. (Available at 
http://www.hp.com/support.)
3. Back up contents and replace hard drive.
3F0–Boot Device Not Found Boot device not found. Insert boot device or load operating system.
3F1–Hard Disk 1 Error Hard disk 1 error. 1. Check and/or replace cables.
2. Clear CMOS. (See Password security and 
resetting CMOS on page 118.)
3. Replace the hard disk drive.
3F2–Hard Disk 2 Error Hard disk 2 error. 1. Check and/or replace cables.
2. Clear CMOS. (See Password security and 
resetting CMOS on page 118.)
3. Replace the hard disk drive.
400-Serial Port A Address Conict Detected Both external and internal serial ports are 
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and 
resetting CMOS on page 118.)
3. Recongure card resources and/or run 
Computer Setup or Windows utilities.
401-Serial Port B Address Conict Detected Both external and internal serial ports are 
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and 
resetting CMOS on page 118.)
3. Recongure card resources and/or run 
Computer Setup or Windows utilities.
402-Serial Port C Address Conict Detected Both external and internal serial ports are 
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and 
resetting CMOS on page 118.)
3. Recongure card resources and/or run 
Computer Setup or Windows utilities.
403-Serial Port D Address Conict Detected Both external and internal serial ports are 
assigned to the same resources.
1. Remove any serial port expansion cards.
2. Clear CMOS. (See Password security and 
resetting CMOS on page 118.)
114 Chapter 7   POST error messages and diagnostic front panel LEDs and audible codes