A wash and wipe is a re-installation of windows. (wash the data to remove any virus or malware infections and then wipe the hard drive) We generally do this when there is some kind of defect or error with your operating system that is often caused by viruses or failed update installs. Often the best way to get your computer back to factory fresh (and fast!), reinstalling Windows is sometimes necessary to repair damage done by certain viruses.
First we would remove your HDD (Hard Disk Drive) from the laptop/PC in order to recover any data you may have on the device (this does not include programs. We then hook the unit up to our network and install the version of windows you require. Updates are installed and your data is put back onto the PC along with a few standard programs such as Google Chrome or Team Viewer.