Alright but i'll tell you what did acer sent me
your system does not qualify for the windows 7 upgrade.
Please be informed that Acer does not support changing an Operating System. Changing the Operating System may cause
driver conflicts. You have the option of upgrading or changing your Operating System at your own discretion. However, it is preferred that you keep to the original configuration of your system so that all the programs and applications in your computer will recognize all the hardware installed in it.
Although we will still support the hardware of the system, we will not be able to support the new Operating System. We can still support the functionality of the system with the new Operating System. If the support reaches the point of suspected hardware replacement/repair vs. Software support for the hardware, you must reinstall the original Operating System and
drivers before the part can be replaced/repaired.