How to restore an emachine with no cd?



Now, what do you mean restore the desktop ? Just the desktop, the whole machine ? If having problems accessing desktop and you have restore points to fall back on, choose a date when the computer was working correctly and do a Windows System Restore.

or, take your pick from some of these:
http://www.bing.com/search?q=emachine+et+restore&form=MOZSBR&pc=MOZI