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.