BSOD: KERNEL_DATA_INPAGE_ERROR 7A: getting worse...

In interest in providing enough information:
I have no pending updates and updated nvidia drivers yesterday to see if it would help the game at all. I believe it had no effect on the BSOD issue.
Also, I noticed the Health Report says I have no anti-virus but that is incorrect as I run Avira and just updated. The security center knows this so not sure why report doesn't.
This error is not always recorded and I had some .dmp files that were corrupt.
It has become worse over the past two weeks with no hardware changes to the pc.
More obvious when playing a game like Skyrim but even last night, crashed just idling.
The game last week was hanging, everything slowed and even if I could get a clean shutdown, it would usually bluescreen right after. Many of those were not recorded as there were about 10 in the past week.

Next, when rebooting today, I received the "C: Volume is corrupt message and can't be fixed. Please run autochk." I could get into safemode. However, running repair pc from Advanced Options allowed me to finally boot so I guess the dirty bit was reset.

Finally, historically I have had issues when rebooting where I have to change the SATA port to get around the "Disk Error Press Ctl Alt Del" to restart. Recently, I have also had the reboot give the "no bootable media" message.

I put my specs in profile, I hope that helps. I'm really just trying to narrow down if it's the hdd, motherboard or windows. i don't want to reinstall yet if the problem will still be there.

I guess specs might not be convenient in profile.
Windows 7 HP 64 bit
Nvidia 460 GTX
WD 640 GB Black (3 partitions)
Mushkin Hyper-X 1600 4 gb
Audio Kontrol (USB Audio)
Samsung DVD-CD player
Keytronic Kb
Logitech G500 mouse