Hang everytime and problem in hard disk

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Hello,

My pc has 2gb ram and 1.6 ghz processor....initially my pc run smoothly though it has 2 windows installed...but now it does'nt work smoothly it run so slowly and hang ....and it also take so much time to start.....and there is 1 more problem its hard disk do not respond in 5 to 6 startings then it suddenly works.....i m not able to understand this?

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

References ccm.net/forum/affich-1016651-hang-everytime-and-problem-in-hard-disk

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