Select the latest version of the NVIDIA driver under the section for your graphics card that is marked 'tested, proprietary', then click Apply. Open Software and Updates, go to the 'Additional Drivers' tab. I have an old I3 quad core 2.4 gigaherts with 16 gig DDR3 ram ( ram was a gob of money ) but worth it ! Oh yeah to make your self part of the USB in Virtual Box ( sudo adduser USERNAME vboxusers ). Run sudo apt install nvidia-driver-510 in the terminal and restart your computer when it's done. I suggest you upgrade to 15.10 has the bugs of 15.04 cured and if you can Max out the ram in the computer runs a gob faster. In 2015 Microsoft released Windows 10, which came with Cortana, a digital personal assistant like Apples Siri, and the Web browser Microsoft Edge. Until I learn Ink Scape and where all the buttons are for doing all the things I can do in windows Some programs are almost same as windows programs just menu is different like Corel Draw is almost same as ink Scape just I have to find the spot on the menu that is same as the Corel Draw one takes a while So I revert back to the Corel Draw to do somethings faster. I also tried the Wine attempt and it said no not this time.

I installed Virtual Box inside of Linux ( Ubuntu 15.10 64 bit ) then added Win 7-1 to it plus run the programs which do not and are not open to Linux O/S like Ringcentral and Sketchup and a few other small programs ( I have a share folder on the Ubuntu Desktop for sharing files back and forth ) You have to tell it where the shared folder is at.

Windows vs mac vs linux 2015