Very often registry permissions in Windows get messed up.  Almost all of the time this makes different programs not to work at all. I will cover the situation when there are no items shown in the Device Manager e.g. Device Manager is empty.  If you try to restart the computer, run spyware scan and  even rescan the devices directly from device manager no items will be shown in the device manager. After some testing I’ve found that this is registry permissions related issue. You must use the Registry Editor in …