sony VAIO PCG-FRV25 ...operative system not found

[EMDY]

hi.....i´m having problems with my laptop.....sony vaio PCG-FRV25, i wanted to change from windows xp homo into Pro....i formated my hd, boot from cd and started installing windows xp pro, like many other times evereything looked fine, but when making the first reboot from installation the laptop gives me an error at the prompt screen, OPERATING SYSTEM NOT FOUND....i got into C-Mos or Bios....and changed to boot from Optical disk, floppy disk, network, and hard disk drive but Neither of them seem to work......looks like my hd can´t be recognized,....i need some help to boot my system.....any one???

 

[Corvette]

You can upgrade to pro (It is allowed so you didn't need to reformat/clean install atfer all)