New
#1770
Mark Win7 partition Active before running Startup Repair - Run 3 Separate Times until Win7 starts and holds the System Active flags.
Then install EasyBCD to Win7 to add XP, accept offered boot files, autocompletes, Save, reboot to Menu.
Download your wireless driver from the Acer Support Downloads webpage for your model to CD/flash stick, unzip and install it to get online to update Win7 including the latest drivers in optional Windows Updates. Absent XP drivers you may to search to find an XP driver for the wireless device if the oldest one on Acer webpage doesn't work in XP, even installed in Compatibility Mode