G530-44463​8U Sleep/Hibe​rnate issue with windows7 Ultimate 64Bit with 4GB ram

I have a problem with Lenovo G530-444638U. I upgraded to 4Gb ram and installed a fresh copy of Windows 7 Ultimate 64bit and I’m facing sleep and hibernation problems. When I try to put laptop to sleep mode and I try to resume from sleep, it restarts by itself. I tried every single option in my power management and every command leads to restart. I also have the same problem with hibernate mode. When I try to resume from hibernate, it restarts and I have option on the screen to delete restoration data in order to continue,  
Reading on Lenovo forums and Google search, it looks like it is a known issue.  I have the latest graphic and WAN drivers from Intel for win 7 and still I can’t solve issue. Is anyone has same model and expediting this problem, any help would be appreciated. 
When I downgraded my ram form 4gb to 3gb then sleep and hibernate works fine.  i installed vista ultimate 64bit and had same sleep/hibernate issue. I called lenovo tech support and they told me to call software support, which is provided by third part and it is not free, i don't think it is software issue. I tried diffrent ram and had same issue.
T6500(2.10GHz), 4GB ram 16HTF25664HY-667E1, BIOS Version     6GET19WW(for NON-HDMI), Lenovo Energy Management 4.4.1.1 2009-10-22 7.67 MB Windows 7 64bit 

also one more issue i had... is when i try to boot up... somtimes it will go into a loop for a couple times. it will try to load windows(no blue screen)-->reboot--> and ask me if i want to use system recovery/start windows normally.
any help will be greatly appreciated.
Thanks very much.

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