GPU Died + 2nd Memory Channel?

bananamber

Honorable
Jan 7, 2017
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10,510
Last week while I was playing Guild Wars 2, right in the middle of a world boss battle, my computer freezes, displaying a brown screen with vertical grey lines with the sound frozen in the background. Upon restarting, no POST. After many hours of half-drunken fuckery I discover my video card had died, as I could only get POST with the IGP without the video card plugged in, as well as removing the memory I have in slot 3 (Slot 4 was unoccupied). However, twice I was able to get POST (with no video) with the 3rd slot occupied, but only those two times.

Later I discovered not only did the video card die, the second memory channel appears dead too (Slots 3 and 4). If any memory is in those slots, it will not POST. I tested it with 5 other supported chips I have laying around that are known to be either good or good enough to boot (Some cause random BSODs).

That seems far too coincidental to me. I have a strong understanding of computers and electronics in general, but I'm at a loss on this one. Did my PSU do something, is my mobo going poo-poo? Just to note, while the 2 memory slots are dead, only the video card is dead, the PCI-E x16 slot is fine (I currently have an nVidia 9800 GTX+ in as a temp).

Specs (When the crash occurred):
Motherboard - MSI 785GT-E63
Processor - AMD Phenom X4 940
Memory -
-DIMM0: Samsung DDR2-800 1GB (M3 78T2953EZ3-CF7) (Now removed)
-DIMM1: Kingston DDR2-800 2GB (TYG410-ELF)
-DIMM2: Kingston DDR2-800 2GB (TYG410-ELF) (Now occupying DIMM0)
-DIMM3: Empty
Video Card - MSI R7850 Twin Frozr 2GB (Now dead)
Sound Card - Creative X-Fi XtremeGamer Fatal1ty Professional Edition
Power Supply - Thermaltake Smart 650W (Only 3 months old)
 
Solution
Thermaltake Smart series PSU is low quality (Tier four) PSU.

Tier Four
Built down to a low price. Not exactly the most stable units ever created. Very basic safety circuitry or even thin gauge wiring used. Not for gaming rigs or overclocking systems of any kind. Avoid unless your budget dictates your choice.
PSU Tier list: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

The lower quality PSU is, the higher chance that it can fry your entire system.

As far as what got fried, we know for sure that your GPU is dead. And that your MoBo sustained some damage as well (since 2nd RAM channel doesn't work anymore). The extent of damage on your PC is hard to tell and you might end up replacing the MoBo if the damage to...

Aeacus

Titan
Ambassador
Thermaltake Smart series PSU is low quality (Tier four) PSU.

Tier Four
Built down to a low price. Not exactly the most stable units ever created. Very basic safety circuitry or even thin gauge wiring used. Not for gaming rigs or overclocking systems of any kind. Avoid unless your budget dictates your choice.
PSU Tier list: http://www.tomshardware.co.uk/forum/id-2547993/psu-tier-list.html

The lower quality PSU is, the higher chance that it can fry your entire system.

As far as what got fried, we know for sure that your GPU is dead. And that your MoBo sustained some damage as well (since 2nd RAM channel doesn't work anymore). The extent of damage on your PC is hard to tell and you might end up replacing the MoBo if the damage to it was too great.

I suggest you get yourself a new PSU. Aim for a good quality (Tier two) PSU, preferably great quality (Tier one) PSU if you can afford it.

Anything from the oldest PSU OEM, Seasonic is great. For you, i suggest Seasonic G-550. It's good quality (Tier two), 80+ Gold efficiency, semi-modular and comes with 5 years of warranty.
pcpp: http://pcpartpicker.com/product/DPCwrH/seasonic-power-supply-ssr550rm

All my 3 PCs: Skylake, Haswell and AMD are also powered by Seasonic. (Got PRIME series in Skylake, M12II EVO series in Haswell and S12II series in AMD, full specs in my sig.)

 
Solution