WHEA UNCORRECTABLE ERROR usually occurs while gaming

OK, I'll ask someone to have a look at the update problem for you later. Now onto the stress tests.

STOP 0x124 Troubleshooting

Read carefully before proceeding.

   Warning

If you're overclocking your system, revert back to stock clocks now.

   Note

Test the system once the overclock is removed before continuing with the steps outlined below.

ONE

 CPU TEST

Run Prime95 to stress test your CPU. Hardware - Stress Test With Prime95

   Warning

Your CPU temperatures will rise quickly while under this stress test. Keep a keen eye on them.

TWO

 RAM TEST

Run MemTest86+ to analyse your RAM. RAM - Test with Memtest86+



MemTest86+ needs to be run for at least 8 passes for conclusive results. Set it running before you go to bed and leave it overnight. We're looking for zero errors here. Even a single error will indicate RAM failure.[/note]

THREE

 HDD TEST

Run SeaTools to check the integrity of your HDD. SeaTools for DOS and Windows - How to Use

Run chkdsk Disk Check

FOUR

 GPU TEST

Run Furmark to stress test your GPU. Video Card - Stress Test with Furmark

   Note

Run Furmark for around 30 minutes.

   Warning

Your GPU temperatures will rise quickly while Furmark is running. Keep a keen eye on them.

MemTest86 or MemTest86+? There's a big difference. You used the one linked yes? How many passes? Time is irrelevant, number of passes are crucial.

It needs 8 passes at least to be conclusive.

Because of this in post #24 I do wonder what kind of cooling does this computer has. Do AMD's run that cool?

Prime95: Ran for a few hours, no crashes, temps stayed at around 45 degrees

That is strange, it seems way too cool while being stressed by Prime95.