OPERATING SYSTEM NOT FOUND MESSAGE

Try to reboot several times...its probably a different issue...maybe it doesnt see the hdd orsomething like this ...try to reset the bios to factory settings ...
it also might crashed ..and when you tried to reinstall you format the hdd or maybe just the C partition ..and you didn't finished properly the installation .....if it boots ok ...and just do not see your os...but you know you didn't do anty of those issues I enumerated just try to reinstall the os ...and meanwhile format C part in NTFS durring it.. of you dont know how ....look for me on yahoo .. and I will explaine detailes and send you a installation simulation ...Good luck ! YM ID: catalin _yo_vlad

HI,
This can be an issue with the hard drive..

Go to bios by tapping F10 while the system boots > go to diagnostics and select hdd self test.

If it given an error "No IDE device found" then try reseating the hard drive. i.e. take it out and put it back in.

Otherwise try changing the boot order by going to advance / system configuration > select boot order > select the hdd and pess F6 till it goes to the top. Press F10 to save and exit.

Hope this helps..
Regards,
Anup