HP Compaq dc7800 User Manual

Nonsystem disk/NTLDR missing message.
Cause Solution
The system is trying to start from a diskette that is not bootable. Remove the diskette from the diskette drive.
The system is trying to start from the hard drive but the hard
drive may have been damaged.
1. Insert a bootable diskette into the diskette drive and
restart the computer.
2. Check the hard drive format using fdisk: If NTFS
formatting, use a third party reader to evaluate the drive.
If FAT32 formatting, the hard drive cannot be accessed.
System files missing or not properly installed. 1. Insert a bootable diskette into the diskette drive and
restart the computer.
2. Check the hard drive format using Fdisk: If NFTFS
formatting, use a third party reader to evaluate the drive.
If FAT32 formatting, the hard drive cannot be accessed.
3. Install system files for the appropriate operating system.
Hard drive boot has been disabled in Computer Setup. Run the Computer Setup utility and enable the hard drive entry
in the Storage > Boot Order list.
Bootable hard drive is not attached as first in a multi-hard drive
configuration.
If attempting to boot from a hard drive, ensure it is attached to
the system board connector labeled P60 SATA 0.
Bootable hard drive's controller is not listed first in the Boot
Order.
Run the Computer Setup utility and select Storage > Boot
Order and ensure the bootable hard drive's controller is listed
immediately under the Hard Drive entry.
Computer will not boot from hard drive.
Cause Solution
The device is attached to a SATA port that has been hidden in
Computer Setup.
Run the Computer Setup utility and ensure Device Available
is selected for the device's SATA port in Security > Device
Security.
Boot order is not correct. Run the Computer Setup utility and change boot sequence
in Storage > Boot Order.
Hard Drive's "Emulation Type" is set to "None." Run the Computer Setup utility and change the "Emulation
Type" to "Hard Disk" in the device's details under Storage >
Device Configuration.
Hard drive is damaged. Observe if the front panel Power LED is blinking RED and if
any beeps are heard. See
POST Error Messages
on page 205 to determine possible causes for the blinking red
and beep codes.
See the Worldwide Limited Warranty for terms and conditions.
Computer seems to be locked up.
Cause
Solution
Program in use has stopped responding to commands. Attempt the normal Windows “Shut Down” procedure. If this
fails, press the power button for four or more seconds to turn
Table D-4 Solving Hard Drive Problems (continued)
Solving Hard Drive Problems 227

HP Compaq dc7800 Specifications

General

Tcase	73.3 °C
Bus type	FSB
Stepping	M0
Processor cache	2 MB
Processor cores	2
Processor model	E4600
System bus rate	- GT/s
Processor family	Intel® Core™2 Duo
Processor series	Intel Core 2 Duo E4000 Series
Processor socket	LGA 775 (Socket T)
Processor codename	Conroe
Processing Die size	111 mm²
Processor frequency	2.4 GHz
Processor cache type	L2
Processor lithography	65 nm
Processor manufacturer	Intel
Processor front side bus	800 MHz
Processor operating modes	64-bit
ECC supported by processor	No
Thermal Design Power (TDP)	65 W
CPU multiplier (bus/core ratio)	12
Number of Processing Die Transistors	167 M
Internal memory	1 GB
Internal memory type	DDR2-SDRAM
Maximum internal memory	8 GB
Memory layout (slots x size)	2 x 0.5 GB
HDD speed	7200 RPM
HDD interface	SATA
Optical drive type	DVD Super Multi
Total storage capacity	160 GB
Audio input	1
LightScribe	Yes
Networking features	Intel 82566DM Gigabit Network Connection
Graphics card RAMDAC	400 MHz
Storage drive controller	SATA 3, 0 Gb/s NCQ SMART VI
Discrete graphics card model	Intel® GMA 3100
Maximum graphics card memory	0.256 GB
Operating system installed	Windows Vista Business
USB 2.0 ports quantity	8
Chassis type	Mini Tower
Country of origin	China
Cable lock slot type	Kensington
Operating altitude	0 - 3048 m
Non-operating altitude	0 - 9144 m
Storage temperature (T-T)	-30 - 60 °C
Operating temperature (T-T)	10 - 35 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 90 %
Power supply	365 W
Product type	PC
Processor code	SLA94
Processor ARK ID	32242
Processor package size	37.5 x 37.5 mm

Weight and Dimensions

Depth	452 mm
Width	177 mm
Height	447 mm
Weight	11800 g