Hi, CC.
Unfortunately, pc came installed with xp and no disc was
provided
Then you really need to discuss this with whoever sold you the computer
without the full WinXP CD-ROM. Original Equipment Manufacturers (big ones
like Compaq and Dell and small ones like your local mom and pop PC
assembler) buy WinXP from Microsoft at a discount price, reflecting the fact
that the OEM assumes the responsibility to support that modified version of
WinXP. If you mention the make and model of your computer, there's a good
chance that someone here will recognize it and have some specific advice for
you.
Otherwise, about all you can do is run the System File Checker and hope that
the files you need are somewhere on your hard drive, perhaps in a partition
hidden by the computer vendor.
At a Run prompt, type: sfc /scannow
SFC will compare each WinXP operating system file with the "known good" copy
held in your on-drive cache and replace any missing or damaged ones.
Normally, you should have the original WinXP CD-ROM available, because SFC
will probably need to see it. In your case, SFC may be able to find the
files in that hidden partition.
If that doesn't work, you may have no resource except the vendor who sold
you that computer.
RC