how to make device manager detect my graphics card?

i have the dell nvidia driver downloaded from the dell website but how should i remove the current driver and install the dell one???

Try to install the intel driver first from the same site that maxie gave you. And then download nvidia drivers from nvidias own web page. Drivers | GeForce

which intel driver should i install???
i already have the chipset driver

which intel driver should i install???
i already have the chipset driver

how to remove my current nvidia driver and install the dell site's one?

if i remove nvidia from control panel, wont i be in the same position like before?(my first problem)