Hello... If you can get into the BIO's ? then your "golden" ... does your Bio's say i7 3770 on any of the screens? B /
Typically most "Sandy bridge" 1155 MB's were BIO's upgraded for "Ivy bridge" CPU's... and should not be a problem B / unless the website for your brand/model of MB clearly states "No compatibility" B /
ACER MB's will have Chinese off brand chips on them and suspect it's just a simple "fresh" install of the OS will sort all of this out in ~15-30mins B /
* "fresh/Clean install" means deleting all the previous "Partitions" on the Drive, for the "new" install/OS to have room for it... all the previous information/Space on the HD will be removed and freed up.