These discs are for use with a Sony Vaio VPCEG series laptop, not really sure tho. This was tested on a Sony Vaio VPCEG37FM laptop, but will not work on non-Sony computers wihout modification. If you think you can find a way to modify these to work on non-Sony computers, contact me.
If you have a similar Sony Vaio laptop which works with these restore discs, comment so. Operating System is Microsoft Windows 7 Home Premium SP1 x64.
To use these discs, download the 8.7GB 7-Zip file and extract the ISO files. Then, burn the 3 ISO files to each DVD-R disc.