My Acer won't boot up

Either the boot area has been damaged by malware or the hard drive is failing.
Changing the boot order to start with the optical drive and using a recovery or installation disk should let you boot so you can run checks on the hard drive.
BTW, a set of 4 recovery disks I received from the system mfr. claim to each be bootable and they definitely are not; there is no reserved space for a boot sector on any of them.