Thank you. I have had non-boot and blinking light issues on an HP Desktop after accepting the Windows 8.1 update. However, the problem occurred weeks after installing the update. The notion that my computer is broken was belied by the fact that I was able to reload a backup image of WIndows 8.0 and it has worked for months since.
I came here specifically to see if the G7-2340dx had similar issues with the 8.1 update. Seeing that there are the same issues I will decline to update to 8.1.
Please advise whether HP will work with Microsoft to fix whatever driver or BIOS conflicts are causing these crashes. My 2340dx came with 8.0 pre-loaded and the only change I have made was installing an addiotional 4 gb of RAM.