Philips Iqon Desktop Spairs Or Repair +

Philips Iqon Desktop Computer Windows Home Basic Edition Been a gd computer the last 5yr fully working only problem seems to be the operating system im told it might need a new HDD but not a 100% as all im getting is code cost me over 600 brand new but it dont start up normaly i just keeping getting some error message im told it could be the operating systems but iv went and bought my self a new windows 7 if any questions please ask ill get bk in touch same day thanks for looking