Sony Ericsson Drivers Download by Sony Mobile Communications. The best way to fix your PC to run at peak performance is to update your drivers. If your system is slow, unresponsive or crashes often, the problem may be with your drivers. In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager. sony ericsson ki not working with windows.7 no usb driver available no responce when connected by usb to pc. i tried sony erricson pc suite & sony pc companion. is their any sollution to connect mobile to pc win 7 64 bit. Jul 03, | Sony Ericsson Ki Cyber-shot Smartphone. Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for Sony Ericsson K It is a software utility that will find the right driver for you - automatically. DriverGuide maintains an extensive archive of Windows drivers available for free download. We employ a team from around the world.4/5(38).