我部電腦洗左機,結果咩到無洗,應該點做?

did you backup all your files and programmes before?
If not, no one can help you. You have to reinstall your OS and all the driver prog, aplication prog...
after you reinstall your computer, here's a backup programmme which useful
http://www.download.com/BeInSync/3000-7240_4-10727551.html
you can use it to backup your computer efficiently
hope ot can help you