Autoplay doesn't work

Hello,
When I plug in a camera or my iphone to get photos off them, the autoplay does not work (Toshiba Satellite, Windows 7). I have already done the following
- Checked autoplay settings (it is set to Ask Me Everytime)
- Uninstalled and reinstalled the devices
- Checked that they drivers are up to date (they are)
- Gone to regedit and gone to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer but under policies I don't have an explorer and I can't find the NoDriveTypeAutoRun key

Can anyone help please?

I'm not very techno savvy and don't know how to 'reboot the system' (I have read that on other forums).

Any help much appreciated! Thank you