I am so stumped and 2 days into trying get Ubuntu on this machine, Lenovo Z570.
Initially installed 32-bit 12.04 and it worked fine except it only acknowledged 2.9GB RAM (should be 8NG), which is when I learned that I was supposed to have installed the 64-bit version. Did so, can't boot up.
Error is PXE-E61 Media test failed, check cable (booting from HD as it should be).
"Boot-repair" (installed under Live USB) hangs on scanning, never completes. If I close it manually a few screens come up and I can try the Recommended Repairs but no fix.
It looks like there was a BIOS update for this machine but it is only for Windows and that has been gone since first Ubuntu install. I have tried reinstalling 32-bit, it does work, so have ruled out a cable actually being unplugged.
What should I do?