COMPUTER NOT WORKING PROPERLY

Location/place: B-694,RAJBEER COLONYGALI NO 7 OLD KONDLI DELHI 96.

Name of company/service: HCL COMPUTER

I HAVE PURCHASED COMPUTER ON 21.12.2010.FROM YOUR AAKRITI ENERGY &INFOSOLUTION LIMITED SHAKARPUR .MY COMPUTER IS NOT WORKING WELL, WHEN I SWITCH ON THE COMPUTER IT WILL SWITCH OFF AUTOMATICALLY AFTER HALF AN HOUR. MY CPU NO IS 6104AC485049.