Your system uses an Intel HD4000 which dynamically changes the amount of shared video ram depending on the load. the minimum is 32Mb but will increase upto 1.7Gb if needed. Mohaa has a minimum requirement of 16mb of video ram not 64(http://en.wikipedia.org/wiki/Medal_of_Honor:_Allied_Assault). I dont think its a video card problem. Many old games(yours is 11 years old) wont run on windows 8. Try this http://www.dummies.com/how-to/content/how-to-run-older-programs-under-windows-8.html