System crashes..where to begin?

Not sure if G&D is the best place for this post but, here goes:

I'm trying to figure out which part of my PC I should purchase first, to begin testing. Here are the issues...and thank you in advance!

Win7 64-bit, i5, 8gb, GTX460, 550psu, asus motherboard lga1155... (can't remember the rest just now)

1) I can game (diablo 3, COD, whatever) just fine, no issues but, while surfing the net I will get the following event log at random. Could be hours, could be days. I did a complete rebuild of the OS and it started happening again. So, not drivers would be my guess.

"The description for Event ID 14 from source nvlddmkm cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer."

2) If I plug in my wireless 360 controller while my Corsair K90 keyboard is plugged in, PC freezes and some times multiple reboots are required before the system doesn't boot to a frozen state.

3) If I plug in the controller while my Corsair K60 keyboard is in use, not a problem but I did get the nvidia issue in this case, last night while the K60 was plugged in.

3) Random crashes system freeze with either keyboard plugged in (with no controller).

I'm leaning toward a faulty PSU or perhaps mobo.

I was planning on purchasing either a mobo, psu or new video card to begin testing this evening.

Any thoughts? Thanks
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More about system crashes begin
  1. update netframework from windows update. also look to see if there are any other updates. update DX also. you will have to do a search in the box in the corner at windows update for that.

    maybe try a BIOS update.
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