I installed a new comp with a new SATA 500gb Samsung hdd it was working fine for 6 months then one fine day i turned on my comp and i noticed that my hdd was not getting detected ! so i called the service centre and they replaced it ! I went to my friends house (since my cd rom was not working) and installed windows xp on it ! BUT when i connect it to my comp it just does not get detected ! SO i go to my friends house AGAIN! check if it is working there but it does not after connecting it to my comp so i noticed it was my comps problem but then i had a old IDE HDD i connected that and it worked fine NOW I DUNNO WHAT TO DO WHAT IS THE PROBLEM WITH MY COMP ?