I want to replace my harddisk where is the service centre

Try changing the small battery in the board. Or if you have two rams in the system, then the RAMs might not the compatible with each other. Hope this helps :)

change the power supply it seems like you are not getting enough power to the monther board or it could be the power board is bad

Overheating of harddisk is very common in laptops.
But it can cause problems. So i suggest you to clean all the vents, get the heatsink cleaned or replaced at service center. Also you can decrease the spindown time of harddisk to minimize its usages...
for changing spindown time go to..Control Panel>>>All Control Panel Items>>>Power Options>>>Edit Plan Settings>>>click change advance power settings>>> in advance reduce the turnoff harddisk time to 1 Minutes.

hope this will help for sure.....cheers

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CONTACT: Tej Prakash/Chetan Prakash Srivastava
Address: 49(505), Surya Nagar, Taron-ki-koot, Tonk Road,Sanganer,Jaipur.
Phone:0141-2720175,
Cell: 9829081513,9828224899.
Website:www.thecomputerzone.in
Email: [email protected]
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Solution:

i) i would wisely suggest you not to open the compartment of harddisk, try taking it to nearest repair centre since these part are very delicate(like they have delicated soldering ...or components....)

  i would suggest not messup with the broken parts and loose your whole harddisk ..............

Sir my harddisk drive is not working
please give to me Delhi Service center number

Well, to solve the problem quick, I actually called in the service guy. Over here, LG comes to the door, but at an extra $40 bucks excluding parts. What I realise is that the drive is very easy to install, so could have just bought the part and installed myself, saving the $40.
With a DVD drive, it is hard to pinpoint the problem. And it being so cheap (old tech/over supply), most service centres would just replace the whole thing.