New
#11
All new computers and laptops come with a Restore Partition
You should contact Acer on how to restore your system to factory defaults and how to create the restore disks.
If you do not do that, which you should.
The only other thing you can do is get the official disks, either by purchasing them from Acer or from a source you trust.
I have no idea what that is on Cnet, not sure I would use it. As there is no Hash to check against. (nice of them)
The only time the original Media matters is when you are reselling a system.
Technically, (according to Microsoft Reseller Agreement) you can not resell a PC with Windows installed and not provide the orginal media (either by restore partition or by that OEM's restore media), if you have niether, you can not legally sell the system with windows installed, you need to format the drive. Technically.