The first thing I would recommend at least to start with is to remove Symantec/Norton for the time being. Uninstall it and then run the vendor specific proprietary removal tool found here
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Determine the specs on your present power supply your symptoms may be indicative of a faulty, failing or inadequate PSU
NVIDIA recommends that you have a minimum of a 300 Watt power supply with +12 Volt current rating of 18 Amps. Most power supplies have a sticker on the side of them that will show the ratings on it if you are unsure of what you have.
I would consider that (18 amps on + 12 volts) a bare minimum for that graphics card.
Additionally you have a few very old drivers which require your attention
regi.sys 4/16/2007 InterVideo
purendis.sys 6/5/2009 Pure Networks and or Network Magic
pnarp.sys 6/6/2009 Same as above
LHidFilt.Sys 6/17/2009
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LMouFilt.Sys 6/17/2009 same as logitech above
LEqdUsb.Sys 6/17/2009 same as logitech above
LHidEqd.Sys 6/17/2009 same as logitech above
All of these pre-date Windows 7 RTM and should be updated or uninstalled or file extensions renamed as a last resort from .sys to .OLD
See if there is an updated driver for HCW85BDA.sys 7/14/2009 from
Hauppauge Computer Works Product Selector
and while you are at it update
Rt64win7.sys 8/20/2009 from here
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and
RTKVHD64.sys 9/7/2010 from here
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AND.... see if there is a BIOS update newer than Version 5.11 01/28/2010 for your MSI IONA motherboard, presumably from HP?? Possibly here
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