HP Compaq, Presario V3225 Note Book — Non-working

I have purchased one HP Compaq Presario V3225 Note Book, having S/N 2CE720304F, P/N RY301PA, from their authorised ealier, UPTEC Computer Consultancy Ltd., Lucknow, in June 2007. For about one year there was no any major problem. After that one day when I switched on the Note Book did not respond. I then approached their local dealer/service centre at Ernakulam (Kerala). They were very kind enough to rectify the problem. Again, hardly after a month, the same problem occured. I approached them again and explained the problem. Once again they rectified the problem. Now, after a month, similar problem occured and I seriously doublt its realiability. There may be some serious design fault with the system. Kindly advise to whom I should contact. Now the system is available at Durgapur (West Bental). Awaiting a favourable response.

Reghunathan.K