Windows 7: After dual boot none of the windows 7 usb ports work

i recently dual boot my dell inspirion se 7520 with windows 8 pro and windows 7 pro.
in windows 8 pro all my devices works really good like flash drives and gaming controls. but in windows 7 professional none of them works.i dont know which driver to install other than that no drivers disc came with my dell laptop .
here is my device manager screenshot.
both windows 7 and windows 8 are 64bit versions.




please tell me any solution to this problem .

Did you run windows update ?

Almost all Dell drivers have to be installed manually, here they are.

http://search.dell.com/results.aspx?...=False&~ck=tab

yaa i already ran windows update nothing changed.

can you tell me in which category they fall .
the other devices drivers .

there are lot of drivers in the support website i am puzzled which one i have to download from this page.
Drivers & Downloads | Dell United States

Everything under "other devices" looks like it needs a driver.

Use this page.

http://search.dell.com/results.aspx?...False&~ck=anav

which driver should i download from my manufactures website.
here is the link for other devices.
Drivers & Downloads | Dell United States
in this which one should i download to fix it.or should i download all of them.

Just do them all, except the bios and your audio is already done. As you install them you will see the devices in device manager loose the yellow mark.