Other Questions Q:Why does my 4GB RAM only show 3.24GB? A:Please connect to PDF Why_my_4GB_RAM_size_became_to_3_24GB.pdf. Q:How to install Virtual Windows? A:1.First of all, your computer must be able to support the Virtual PC functionality. 2.Go to the Microsoft website to download Windows6.1-KB958559-x86 file with the following link http://www.microsoft.com/windows/virtual-pc/download.aspx   Sales Questions Q:Where can I buy your company products? A:Please contact with our company or leave your contact information on the website. We will contact with you. Q:Where can I buy the parts? A:Please contact the company or on the website to leave your contact information. We will contact with you.   Repair Questions Q:Where can I repair the computers? A:Currently our company has customer service department. You can directly contact with our customer service department or leave your contact information on the website. We will offer the service for you.   Firmware Questions Q:How can I update BIOS and drivers? A:You can download the BIOS and drivers from our website. Please select the options directly.