Adobe Reader is horrid, bloated software anyway. You don't need it. The most popular alternative is Foxit Reader:
http://www.foxitsoftware.com/Secure_PDF_Reader/
but I use (and love) SumatraPDF:
http://blog.kowalczyk.info/software/sumatrapdf/free-pdf-reader.html
With regard to your current problems though, System Restore (from Start > Programs > Accessories > System Tools) can take your PC's registry back a few days, to a date when the problems weren't there. Using it won't delete any files (such as documents, pictures or videos) which you've created in the past few days but it will remove any software you've installed (such as Chrome) during that period.