choppy video

[hbrofman]

hi, i just installed windvd 8 platinum and seem to be having a choppy video problem. i think it is a codec problem - i had windvd 7 it had no problem, i did a microsoft patch which included a wmp 11 update and then i had choppy video. i reinstalled 7 no fix, i bought and installed 8 no fix, i do not know what is wrong.