My functions keys do not work

Vickyna

Prominent
Mar 2, 2017
2
0
510
Hi...i have a laptop toshiba satellite C55D-B5308. I changed to window 8 to 7 because my laptop was so slow because it is a AMD E1 Processor 1Gz. When i reimage, i did not back up to the original drivers... Now, the specials Functions the F1 to F12 keys (volumen, shine, wifi on/off, etc) did not work with window 7..... I do not what to do.....help me