Windows 8 Windows 8 BSOD all the time

Hi,
the above Bugcheck code means a hardware error occurred. Sometimes this can be down to software but the main causes for a machine check exception (which is the type of Bugcheck 124 you had) are:

Normal causes for MCE errors include overheating and/or incorrect hardware installation. Specific manually-induced causes include:

• overclocking (which normally increases heat-output)
• poorly-fitted heatsink/computer fans (the same problem can happen with excessive dust in the CPU fan)
• an overloaded internal or external power-supply (fixable by upgrading)

Computer software can also cause MCE errors (normally by corrupting data which programs read or write). For example, software performing read or write operations from or to non-existent memory regions can lead to confusion for the processor and/or the system bus.[citation needed] Accessing memory marked off-limits by UEFI may cause MCE errors.[3]

Click to expand...

ref:
http://en.wikipedia.org/wiki/Machine-check_exception
Make sure stuff like browsers and flash player are latest versions as well as updating windows. Make sure any vents are clear from dust.

Looking through your drivers they all look pretty good although try changing Avast AV to MSE as Avast has been known to cause the odd issue:
http://windows.microsoft.com/en-GB/windows/security-essentials-download

Check your CPU by running this diagnostic test from Intel:
Link Removed

I know you mentioned that you had tested certain components but please try again so we can check results:

Stress the CPU using this app:
http://www.mersenne.org/download/
Start the app up and click 'Just stress testing'. Use the basic test and test for a few hours.
Watch the temps!
you can monitor temps using this app:
http://www.cpuid.com/softwares/hwmonitor.html
Please post the results.

Test the GPU Vram using this app:
Link Removed

Stress test using this app. Run the burn-in test:
http://www.ozone3d.net/benchmarks/fur/
Please monitor temps using the app above and post results.

Please check your HDD by running a chkdsk. This guide although for earlier version of windows still works for 8/8.1:
Link Removed

Windows does have it's own memory testing app but it can often miss errors and the best app for the job is Memtest86. The latest version of which can be found here:
http://www.memtest.org/

To run Memtest86 you need to either burn a copy of it to disk or use a USB stick. If you look down the page you'll eventually find the latest version and it's associated downloads. If your burning to disk choose the pre-compiled iso zip. If your using a USB method then the corresponding download is the auto installer for a USB stick.
Once you have Memtest86 on the media you selected you'll then need to enter your bios and change the boot order so that the machine will boot from either the disk or stick you have Memtest86 on.
Run the test for at least 12hrs if possible unless it becomes clear that there is a issue. If there is a problem with the RAM you'll see the errors pop up in red so you can't miss them.

Post any new dump files.