Windows XP Home Edition missing drivers

Good day

I cant seem to install any flash drive. Before when i insert a new flash drive, it automatically install by itself (plug and play), now, it redirects me to download softwares in order for it to be installed.

Also, it cant detect my ipod now when i use itunes cos it tells me that i have missing drivers. I cant burn cds/dvds from itunes as well.

Please help. thanks