BSODs - KERNAL_DATA_INPAGE_ERROR and CRITICAL_PROCESS_DIED

Hi, some reasons for blue screens
New hardware - software installed.
Device driver - Video driver - corrupted - faulty.
Faulty Ram - Overheating - Dying hard drive etc.
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Check and post
TSG System Information Utility - found here.
http://static.techguy.org/download/SysInfo.exe
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Download BlueScreenView
http://www.nirsoft.net/utils/blue_screen_view.html
Download link at the bottom of the page.

Download > install.
Once it has scanned > Click on Edit > Select All > File > Save Selected Item
It will open in Notepad - or save to Notepad > Copy > Paste and Post the last 5 minidump files from the scan.

Check this link first
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Run a Mem Test.
http://www.memtest.org/
Scroll down to 'Download (Pre-built & ISOs)'
'Download - Pre-Compiled Bootable ISO (.zip)'

Download the ISO file from one of the links above to your desktop.
Then burn the ISO to a Cd.
Start the Pc using the Cd and run the memory test overnight or for at least 8 passes.

It is best to run a full scan on individual Ram sticks if you can.
Or run the test but if any errors are shown - then remove all sticks of Ram and test each Ram stick one at a time.

Guide to using Memtest86+
http://www.bleepingcomputer.com/forums/topic207910.html
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Hard drive test.
SeaTools for DOS tutorial - ISO to CD
http://knowledge.seagate.com/articles/en_US/FAQ/201271en
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Overheating.
HWMonitor
http://www.cpuid.com/softwares/hwmonitor.html
http://www.piriform.com/speccy