I just brought home a new ASUS R500A (UEFI) Laptop and after much finageling to figure out how to bot from a thumbdrive and numorous failed attempts to install 12.04.2 32bit I finally got 12.04.2 64bit to successfully install.
Only one problem, I can no longer boot into my windows partition nor can I invoke the system recovery via F9 at startup.
I attempted several boot-repairs and Now I'm out of ideas.. I do have a pastebin of the last boot-repair output, I hope someone can help. I have an RMA from ASUS in case I have to send the machine back for a full system reset, but I would like to make sure I've exhausted all options first.
Please have a look at the output from boot-repair, I hope it helps.
PS there are three partitions owned by windows, The OS partition, the recovery partition and a system image partition. I can mount all three in linux and I can see that they are all intact as far as I can tell. I don't know if that helps at all.