With Optrex Lcd Display,if you have a garbage,is because you write too fast on your lcd,you need some delay,but your lcd is defect,try to remove metal case,with rubber pad under and clean wtih alcohol,some time work for me
No, is not hardware issue, if some of the characters do not display right you have a video card driver problem or you have a virus. Here **broken link removed** download AVG free, maybe will help you.