|"I didn't format it yet"|
Then why did you write, "I tried to restore the Windows Xp after Format"?
"This is a laptop
Toshiba qosmio G20"
I know it's a laptop, you listed it as such in the OP. I wasn't sure that it was an old laptop that doesn't support booting from a USB device though.
I don't know if this will work or not, but how about trying an "over the top" install? Just boot into XP, pop the XP disc in the drive & once it spins up it will ask, "what do you want to do?". If it doesn't start automatically, just go to My Computer & double click on it. Select the 1st option, "Install Windows XP" & direct it to overwrite/reinstall into the C:\Windows folder.