My computer is not installed xp sp3, we ask how this is going on

I have several sp3 (including the tomato garden, the pure) in the other computer can hold on, but my computer is not installed, the installation process is always stuck in one place – the middle of a dialog box A plate from the get what txt file, but the computer is not on the A disk, it can not carry out any longer.However, there is no other A computer disk, not how to deal with such situations.We ask that this is Matter how?

A floppy disk is set aside, the first hard disk before you installed the entire format again, we must thoroughly .I have encountered such a situation, look like a grid.Is said to be caused by the poor quality of the installation disk, change it.
I often encountered.Estimate your computer, I had met before, I students Only one computer system, installed a special set, obviously Other disk on another computer on his coat are good computer will not do, you have to go looking for more than a few plate loaded equipment you see the drive in question, can not read
Disk:1.Zhang for a new CD-ROM
2.CD-ROM to install another