Thanks again.
Uninstall all the driver, clean the reg by CCleaner. Install ur given link driver, same again!!!!
so here some quick question, (im not a technical person )
1) now...if i dont install any display driver, in device manage_display adapter dropdown its written "standard vga Graphics Adapter" and after intall the driver its written "intel(R) hd graphics 3000" (after restar windows not bootup n start flickering)
So is it possible that the internal agp part was damaged, but display working fine.
(I mean vga part working but 3d accelerator part not working.)
2) previously several time i install windows and use the same driver and everything was fine, all this mess right after my Toshiba HDD gone and i bought the Western Digital HDD, all i understand that should not a cause of the problem.
So what might be the problem.