Lenovo Ideapad u400 6470M driver problems Windows 7 Home Premium 64bit HELP

I bought this lenovo u400 like 2 years ago and i had no problems, but now my SSD went dead and i bought another, after the replacement i just installed the original windows 7 64 bit home premium, put my notebook's serial installed all the drivers, and when i install the Ati driver from Lenovo my pc gets stuck in a black screen with a white line on the top left of my screen, when i do FN+F8 while booting and start window's safe mode and i go to the device manager i see this ones: 6470M and Intel HD graphics family, when i disable intel hd graphics family my pc boots up normally but the resolution is 800x600 and the max is 1024x768, If i install the Intel 3000 HD my 6470m appears with a yellow triangle on the device manager, i've tried almost 30 different drivers from leshcat, hp, dell, lenovo and AMD's webpage, none of them work, and when i go to the CCC it just lists the intel 3000.
Sorry for my bad english, im from Argentina, Lenovo's support on argentina sucks, last time i've sent it it costed a lot of money, they scratched multiple parts on my laptop and didn't fix most of my problems, and i can't get the One Key backup anywhere, pls help, atleast AND IF ANYONE WITH A LENOVO U400 WITH WINDOWS 7 HOME PREMIUM IS READING THIS AND HIS 6470M DRIVER IS WORKING, PLEASE CONTACT ME.
Lenovo, please, don't give me a crappy answer and most of times when that answer does not fix the problem then you give up and don't reply anymore. Im getting sick, i got this laptop for doing 3D modeling, video editing and multiple more and i just can't go and buy another, things are really expensive in Argentina.

welcome to the community.
i would recommend that you call Service to request a factory recovery dvd set.
phone #s here: http://support.lenovo.com/en_US/detail.page?DocID=PD008370
for Slovokia, specifically: +421 2 4974 8888 for Think-branded machines and 0800-197-462 for Idea-branded machines.
hope this helps a bit.
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welcome to the community.
i would recommend that you call Service to request a factory recovery dvd set.
phone #s here: http://support.lenovo.com/en_US/detail.page?DocID=PD008370
for Slovokia, specifically: +421 2 4974 8888 for Think-branded machines and 0800-197-462 for Idea-branded machines.
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Community Resources: Participation Rules • Images in posts • Search (Advanced) • Private Messaging
PM requests for individual support are not answered. If a post solves your issue, please mark it so.
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hey noir_w_rl,
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