So, here's something to ponder about... Every installation attempt ends with an error. Either that a particular file could not be copied (some .so library file, every time different one) or a generic input/output error:
The installer encountered an error copying files to the hard disk: [errno 5] input/output error This is often due to a faulty CD/DVD disk or drive, or a faulty hard disk. It may help to clean the CD/DVD, to burn the CD/DVD at a lower speed to clean the CD/DVD drive lens (cleaning kits are often available from electronics suppliers), to check whether the hard disk is old and in need of replacement, or to move the system to a cooler environment.
Obviously, next message is that installation has crashed.
First attempt: 1. Create USB startup disk Ubuntu 15.10 on other PC 2. Install on ASUS A72F 3. Halfway copying files, I/O error
Second attempt: 1. Create DVD installation disk Ubuntu 14.04 on yet another PC 2. Install on ASUS A72F 3. Halfway copying files, I/O error
Third attempt: 1. Replace 500GB HDD by 120GB SSD 2. Try installing USB (15.10), USB (14.04), DVD (14.04) 3. All attempts: Halfway copying files, I/O error
Fourth attempt: 1. Return 500GB HDD as internal HD 2. Replace DVD drawer with HDD caddy, with the 120GB SSD in it 3. Try installing USB (15.10) on SSD which is in the HDD-caddy 4. Halfway copying files, I/O error
So, used various sources, used various targets (SSD, HDD), used various media slots (SDA, SDB) all with the same result. Even updated BIOS to latest version from ASUS site.
What could POSSIBLY be wrong here?!? Any ideas where I could start looking would be highly appreciated!