Great replies, but don’t dismiss the possibility it’s a DVD/CD drive problem. I’ve had so many problems with laptop drives that I have an external for troubleshooting.
Good luck.
The drive or the DVD itself ,did you try it in another computer
Oh, yeah. ‘Tis true! I’ve been frustrated with that one a lot!!!
I always use .ISO files as much as possible, since you can mount them to file system in Win 8/Server 2012, and not worry about the DVD hardware...
That was my first thought, so I bought an external USB DVD burner. No change.
Either this, or a bad burn of the ISO file, or a flaky download of the ISO file.
All need be to be checked.
It's a bad idea to load the Insider as an update to the current OS, whatever that is.
I'm writing this from a release that I just downloaded last evening and burned the disk this AM on another computer with almost-new Memorex DVD burner. The install turned out really good with no hitches whatsoever.
This is a Dell Dimension 4700C, 2.8GHz CPU, 1Gb RAM. It does have a slim CDRW/DVD combo drive, and is a totally new install, on a 80Mb Seagate drive. From:
WindowsTechnicalPreview-9879-x32-EN-US.iso
Disc label of the burned disc:
JM1_CCSA_X86FRE_EN-US