agreed the specs are too low to run windows 7 at its best.
the nec english driver can be found here.
if that won't install install the main chipset drivers and don't forget to update direct x
if it all still fails nec site may be wrong so don't forget everest.
look in the left hand list for display, click the + next to it the GPU
now sometimes ati driver tossed salad can happen if you try too many drivers, what you have to do is this.
first off download the driver sweeper program from here ( second version )
install it but don't run it.
go in to add remove programs and remove all the old drivers you have tryed to install.
shut the laptop down, start in safe mode and run the driver sweeper program, tell it ati display.
it will clear the junk out.
once it done restart in normal mode, update direct x once again then try the above nec driver.