always this message "Remove disks or other media" after correct configuration, help is needed, thanks

I have a desktop computer with the configuration:
PII celeron 400MHZ
Memory 312M SDRAM

one day, I found the running speed of the WinXP is very slow. So, I want to reinstall the operating system. I go to CMOS, and set the "boot sequence" to A first, then follows CDROM, finally Harddisk and save the change. But when it don't try to boot from the floopy disk which I insert a system disk, and a message shows "Remove disks or other media". on the contrary, it boots directly from the harddisk(the LED of the floopy even does not light, but I can guarantee that the Floopy disk and CDROM works well. Because I can use it in the low-speeded WinXP). Then, I try to boot from the CDROM, the same problem occurs( The CMOS has been configured with the value CDROM first for the "boot sequence"). The same message displays with the bootable operating system install CD in the CDROM and the system directly boots from the harddisk).

I replace the harddisk with one formatted harddisk. In the self-detect stage, the machine can find the harddisk with the correct capacity. due to no operating system in the harddrive, so it go to floopy to find some bootable system. this time, the floopy disk works fine, the computer boots from the floopy disk(win98 boot disk), but after it enters the dos window, I found that no harddisk can be found.

It's really tedious. any idea, thanks.  
FayeGolfAsked:
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K_2KCommented:
Second harddisk - "computer boots from the floopy disk(win98 boot disk), but after it enters the dos window, I found that no harddisk can be found."

Do you mean "DIR C:" fails?  or "FDISK" says no hard disk found?

(NOT recommended to change it with FDISK, only to look and exit)

If FDISK says hard drive is there and has no partition, or a non-FAT (NTFS, or "Other") partition, then I would not expect C: to be seen by the floppy boot.  Go ahead and start the install.  When you get to where XP needs the drive it should ba able to tell you more about it.  Do not partition the thing until XP offers to do it, cause it can do better than FDISK.  (I recommend NTFS when XP asks, to get the most out of the drive)

If FDISK can not find the drive at all, then the BIOS is not passing the drive info on to the OS.  Maybe CMOS set wrong, Drive jumper wrong, CMOS set to not look for all devices, etc. - Make sure the new hard drive is set to be the same (Master, Slave, or CS) as the old one, and plugged into the same connector.


Good Luck,
2K
(\o/)
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FayeGolfAuthor Commented:
Thanks for your answer
but you say:
Maybe CMOS set wrong, Drive jumper wrong, CMOS set to not look for all devices, etc. - Make sure the new hard drive is set to be the same (Master, Slave, or CS) as the old one, and plugged into the same connector.

indeed, I am very familar with all these things. CMOS, Drive jumper are all set with right parameters or right slot.
I think I should use another harddisk formatted using other computers to boot the system. Maybe, it would works. hope so.
I'm very busy this period and just have no time to deal with  it.
Nevertheless, thank you very much
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FayeGolfAuthor Commented:
after it booted up using the floppy disk, there was just no harddisk that can be found.
In FDISK, no harddisk can be found
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K_2KCommented:
You're welcome.  

There is at least one thing I see missing in my list that may help.  
Since you are familiar with the CMOS settings and jumpers and all,  and connecting to the same 80 pin connector as works with another dirve if set to CS,  

It is mildly possible the drive is displaying characteristics newer than what the BIOS can recognize.  Look to the motherboard or computer manufacturer's web site for a flash update for BIOS (when time permits, of course) .

Also possible sometimes on the hard drive manufacturer's web site under the page about that model hard drive to find info about nonstandard BIOS settings that even the best of CMOS gurus couldn't stumble on without having the hard drive's I/O controller chip's internal schematics.

Good Luck,
2K
(\o/)
0
FayeGolfAuthor Commented:
thanks

In fact, this harddisk works originally with the motherboard very well. Moreover, the motherboard is of a model MVP3 and can recongise a harddisk with the capacity over 32G. But maybe there is so many software installed on the system, windows begins to run slowly. So, I want to reinstall it. Then, I found these problems.

Because it is a friend's computer and this period I'm really busy, so since then, I have not ever got any chance to help him to deal with this problem.

anyway, thank you very much
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