hello, mmm i have some problem here, my laptap is acer aspire 5742 series, intel i3-370m 2.4Ghz, and its 5 years old now, and its been 1 year since it starts to fail, my problem is it loads the acer screen but it wont past after that, after showing the acer word in the screen of my laptap it turns off and on, again and again, but there are times that it boots windows 7 and use it for a few times but after i finished using it and shut down my laptap and turn it on, again it wont past the acer word screen and it will turn off and on again. And also it has now a brand new samsung HDD,keyboard,and RAM. I am now not attaching its battery because its dead now, and still no luck. can you help me? what do you think is the problem?