then your options are limited. No-one here can provide this for you.
See if Acer has provided the option for a Restore to Factory Settings during boot-up. Guidance here;
If not, then you will need to contact Acer themselves and ask if they will provide you with a set of recovery disks. They may charge for the disks.
I have an Acer Aspire 5610Z laptop and I want to restore it to factory settings using the Acer eRecovery Management program. Apparently this program came with the computer, but I must have uninstalled it at some point and though I've been working on this for hours, I cannot seem to find on the internet where I can download this program. Does anyone have any ideas how I can get it? Thanks much!