Turn on notebook compaq nx6120, always 3 beeps and message "Fixed Disk Parameter Table or BIOS Error" and the low line is "System Halted", And another, i remove the HDD from my notebook in order to test with the another notebook. However i do not know where i can put the HDD of my first notebook to my second notebook

Deberías tener ciertas habilidades técnicas para resolver este problema, no es sencillo lo mejor sera que lleves tu computadora con un especialista el error que te marca es un error de la memoria del BIOS la encargada de iniciar tu sistema operativo(windows) llévala al técnico.
Suerte.

I am not sure what motherboard you have but the following link will discribe possible causes for your bios beep code:

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=bph07107

My hp Compaq nx6120 can't starts. When I turn on screen the follow messages F10=ROM Based setup
i pressed F10 but I can't go into bios.
please help me!!

Remove the hard drive and see if you get the same symptom. It should boot, then go into the BIOS and see if it recognizes the RAMs. Re-seat the RAMs if it doesn't boot - if you have two circuit boards - try one at a time. The motherboard can also be your problem.

It seems as if your hard drive has failed or is going to fail. When you hear a clicking noise like that with no CD in the system that is usually what the cause is.

Standard Original IBM POST Error Codes
Code Description
1 short beep System is OK
2 short beeps POST Error - error code shown on screen No beep Power supply or system board problem Continuous beep Power supply, system board, or keyboard problem Repeating short beeps Power supply or system board problem
1 long, 1 short beep System board problem
1 long, 2 short beeps Display adapter problem (MDA, CGA)
1 long, 3 short beeps Display adapter problem (EGA)
3 long beeps 3270 keyboard card
IBM POST Diagnostic Code Descriptions
Code Description
100 - 199 System Board
200 - 299 Memory
300 - 399 Keyboard
400 - 499 Monochrome Display
500 - 599 Colour/Graphics Display
600 - 699 Floppy-disk drive and/or Adapter
700 - 799 Math Coprocessor
900 - 999 Parallel Printer Port
1000 - 1099 Alternate Printer Adapter
1100 - 1299 Asynchronous Communication Device, Adapter, or Port
1300 - 1399 Game Port
1400 - 1499 Colour/Graphics Printer
1500 - 1599 Synchronous Communication Device, Adapter, or Port
1700 - 1799 Hard Drive and/or Adapter
1800 - 1899 Expansion Unit (XT)
2000 - 2199 Bisynchronous Communication Adapter
2400 - 2599 EGA system-board Video (MCA)
3000 - 3199 LAN Adapter
4800 - 4999 Internal Modem
7000 - 7099 Phoenix BIOS Chips
7300 - 7399 3.5" Disk Drive
8900 - 8999 MIDI Adapter
11200 - 11299 SCSI Adapter
21000 - 21099 SCSI Fixed Disk and Controller
21500 - 21599 SCSI CD-ROM System
AMI BIOS Beep Codes
Code Description
1 Short Beep System OK
2 Short Beeps Parity error in the first 64 KB of memory
3 Short Beeps Memory failure in the first 64 KB
4 Short Beeps Memory failure in the first 64 KB Operational of memory
or Timer 1 on the motherboard is not functioning
5 Short Beeps The CPU on the motherboard generated an error
6 Short Beeps The keyboard controller may be bad. The BIOS cannot switch to protected mode
7 Short Beeps The CPU generated an exception interrupt
8 Short Beeps The system video adapter is either missing, or its memory is faulty
9 Short Beeps The ROM checksum value does not match the value encoded in the BIOS
10 Short Beeps The shutdown register for CMOS RAM failed
11 Short Beeps The external cache is faulty
1 Long, 3 Short Beeps Memory Problems
1 Long, 8 Short Beeps Video Card Problems
Phoenix BIOS Beep Codes
Note - Phoenix BIOS emits three sets of beeps, separated by a brief pause.
Code Description
1-1-3 CMOS read/write failure
1-1-4 ROM BIOS checksum error
1-2-1 Programmable interval timer failure
1-2-2 DMA initialisation failure
1-2-3 DMA page register read/write failure
1-3-1 RAM refresh verification failure
1-3-3 First 64k RAM chip or data line failure
1-3-4 First 64k RAM odd/even logic failure
1-4-1 Address line failure first 64k RAM
1-4-2 Parity failure first 64k RAM
2-_-_ Faulty Memory
3-1-_ Faulty Motherboard
3-2-4 Keyboard controller Test failure
3-3-4 Screen initialisation failure
3-4-1 Screen retrace test failure
3-4-2 Search for video ROM in progress
4-2-1 Timer tick interrupt in progress or failure
4-2-2 Shutdown test in progress or failure
4-2-3 Gate A20 failure
4-2-4 Unexpected interrupt in protected mode
4-3-1 RAM test in progress or failure>ffffh
4-3-2 Faulty Motherboard
4-3-3 Interval timer channel 2 test or failure
4-3-4 Time of Day clock test failure
4-4-1 Serial port test or failure
4-4-2 Parallel port test or failure
4-4-3 Math coprocessor test or failure
Low 1-1-2 System Board select failure
Low 1-1-3 Extended CMOS RAM failure

i have installed a 60gb hdd into an m700 without even having to stuff with the bios...

Xp sp2 allows you to install larger drives then the bios reccomends.

On a desktop pc u hear continuos beeping it's something to do with da ram so try replacing the ram or reseat the ram for help go to compaq.com

Fixed disc is refering to your hardrive and the fact that it has been unable to read a bad sector on your hard drive, that sector probably being where the boot.ini file resides. You will have to get the drive checked out, by means of an 2.5" ide to usb powered connector, which will connect to another pc's usb port to enable you to perform a disk check and a repair if possible of the bad sectors, or take to a local repairer where they should have the required adapters.

Sounds like bad disk, although 3 beeps sometimes relates to a memory problem on some motherboard bios's. Click Start>run then type'chkdsk' and then Enter, this will run a damage segment diagnosis and repair, if capable.