I usually try and solve technical issues myself, but the answer to this has eluded me. Hopefully someone here can help me.
I built a new PC a month or two ago. Everything was fine until one time when I started up the PC and it said it couldn't find the boot device. I went in out of options and I finally fixed it or it fixed itself. I go to shutdown my computer a week or so later and it says It wants to install an update (I have it selected so it won't install anything without asking me), and the next time I power the system on I get the same message.
The bios sees the hard drive. I can select it as the device to boot. I have problems where it doesn't see the Windows 7 parition when trying to do a recovery. I think this might have to do with the system being in AHCI Mode and not having the drivers (I think I had a similar problem at setup). It is an Asus Mother. I try and see if I can load drivers off of the disc that came with the motherboard, but there are hundereds of files in folders on the CD and any of the ones I select it doesn't like. My previous comp could detect partitions without drivers. When I was fixing it the first time I noticed switching to IDE would allow me to see the Windows 7 parition in recovery, but trying to load Windows with IDE causes a blue screen as Windows is starting.
The times when Chkdsk was working it didn't find anything wrong with my OS Hard Drive, a Samsung 830.
The other thing that might be messing up certain portions of me trying to get it to work is that one of the hard disks in my computer was a part of a Vista desktop and when I try to do recovery it fixes the partition table, but only does that.