3 Random BSODs

I got 3 random BSODs this week. At least I think they were random. The first one happened while my computer was shutting down because of a Windows Update. The second one happened when I clicked a link to open a new tab. And the third one happened while I was updating my GPU driver. That's all information I have, besides the dump files. Please, help me.

I believe that problem is my GPU, but I'm not sure. So please, help.

Roll back your display driver to WHQL 314.22
(This driver is for a GTX 500 series on Windows 7 64bit, I have chosen the driver for you based on your system specs.
If you have changed your GPU but not updated your system specs then this driver will be incorrect and you must find it yourself.)
Follow these instructions.

NVIDIA Drivers - Avoid Problems

Code:

fffff880`0f624000 fffff880`1027c000   nvlddmkm T (no symbols)           
    Loaded symbol image file: nvlddmkm.sys
    Image path: \SystemRoot\system32\DRIVERS\nvlddmkm.sys
    Image name: nvlddmkm.sys
    Timestamp:        Tue Mar 04 11:07:52 2014 (5315B408)
    CheckSum:         00C20523
    ImageSize:        00C58000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

You have had a 0x124 error as well.
Looking at the WHEA Error Record it looks like the CPU has found a fault which is why the first parameter is 0 (Machine Check Exception).

Code:

BugCheck 124, {0, fffffa80056bc028, be000000, 100110a}

Probably caused by : hardware

This shows that the CPU couldn't find the fault so we'll have to stress test all hardware components.

Code:

Error         : GCACHEL2_ERR_ERR (Proc 3 Bank 7)
  Status      : 0xbe0000000100110a
  Address     : 0x00000000100d2700
  Misc.       : 0x0000025086000086

However, I'm leaning towards a failing GPU as you have had two 0x116 bugchecks (VIDEO_TDR_FAULT), this indicates an attempt to reset the display driver and recover has failed because it didn't respond within the allocated time interval, this is mainly caused by a bad display driver or failing GPU.

Stress test your CPU with Prime95

I recommend running Prime95 for around 2 hours

   Warning

As with most stress tests your component's temperature will rapidly increase.
It is advised that you download a temperature monitoring program like HWmonitor
Keep an eye on your temperatures and stop the tests if it starts to overheat

Stress test your graphics card with Furmark

I recommend running it for around 30 minutes

   Warning

Furmark will increase the temperature of your GPU rapidly so keep and eye on your temperatures

Memtest86 will test your RAM

   Information

Run Memtest86 for at least 8 passes so we get enough information to confirm that your RAM isn't failing

Run a Disk Check to scan for errors

   Note

Afterwards go into an Elevated Command Prompt (Run as administrator) and type in sfc /scannow
If it finds errors reboot and run the scan two more times

Run SeaTools to see if your HDD or SSD is failing

Post back the results.

Ok. I installed the driver you recommended. And everything looks fine now.

CPU Stress Test for 2h: OK
GPU Stress Test for 30m: I tested several times because I couldn't test for more than 8 minutes because it began to overheat after 7m. But other than that, everything is fine. No artifacts or anything at all.
RAM Test: 8 passes. No errors.
Disk check and SeaTools test without any errors.

I believe you're right, the problem was my GPU and it looks like the problem was the driver.

Don't forget to mark the thread as solved :)