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Possibly defective HD7850

G18241

G18241

G18241

Soldato
Joined
3 Mar 2004
Posts
7,340
Location
Sheffield
Purchased my entire new rig last Friday and all is great, apart from the fact my HD7850 keeps randomly losing power, causing me to have to hold the power button down to restart my PC.

Only ever cuts out when gaming, so ran OCCT GPU stress test on it, and everything came back fine, temps were good and nothing crashed. I can generally get about 1 hour of gaming in before it cuts off...the keyboard and mouse stay on, as do the fans in the computer, along with the LEDs etc so this made me think it wasnt the PSU...also tried the OCCT PSU test and this came back fine. The monitor seems to go off as the power light on it starts flashing (which it does once the PC has been turned off) and any sound playing just hangs, doesnt stutter, just a constant noise.

Decided to swap it out for my HD4850 that i had in my last rig to try and narrow down what it was. Was gaming for well over 4 hours last night without a problem so really do think its the GPU.

Put the HD7850 back in this morning, and once again i get a crash.

The rig is all brand new (apart from the backup HDD) with windows 7 64bit on as a fresh install and all drivers were updated to the newest ones straight away.

Any ideas or does it look like the GPU needs replacing?

Spec :

YOUR BASKET
1 x Gigabyte ATI Radeon HD 7850 OC Windforce 2X 2048MB GDDR5 PCI-Express Graphics Card £169.99
1 x Intel Core i5-3570K 3.40GHz (Ivybridge) Socket LGA1155 Processor (77W) - Retail £167.99
1 x Corsair Force Series 3 120GB SATA 2.5" 6Gb/s Solid State Drive (CSSD-F120GB3A-B) £78.98
1 x Asus P8Z77-V LX2 Intel Z77 (Socket 1155) DDR3 Motherboard £69.98
1 x Corsair 2013 Edition Gamer Series GS 600W '80 Plus Bronze' Power Supply (CP-9020063-UK) £59.99
1 x Kingston HyperX Genesis Grey 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit (KHX1600C9D3X2K2/8GX) £41.99
1 x Xigmatek Pantheon Mid Tower Case - Black £39.98
Total : £643.01 (includes shipping : £11.75).

 
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Is your CPU overclocked? If so, try running it on stock and see if it still does it. It may be an unstable CPU clock and the 7850 is pushing the CPU far more than the 4850 will.
 
can anyone shed any light on this?

obviously dont want to RMA it if it is something that can be sorted, but after passing the OCCT test im conffuzled :(
 
Nexus18 said:
Sounds very similar to the problem I have/had with my new MSI 7850:

http://forums.overclockers.co.uk/showthread.php?t=18476678

Changing the voltage/speed tweaking, changing RAM, reinstalling windows etc. didn't fix it at all, but putting the power control limit from 0 to 20% in CCC (overdrive section) seems to have either fixed it or delayed the problem.

Does it happen in every game or only a few?
Click to expand...

Looks promising, have you not had a single lock up since then?

Only games ive got round to playing are sleeping dogs, and the gf has been playing the sims 3

and the motherboard is : https://www.overclockers.co.uk/showproduct.php?prodid=MB-555-AS
 
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No problems since adjusting the power control limit. I need to get around to playing BO II for longer to make sure that the problem has truly gone and not just been delayed. BO II was/is the worse for lock ups from my experience followed by FC 3, don't recall having any problems with other games like crysis 2, TWD etc. Only tried sleeping dogs out after changing the power control limit but no problems with it after playing for about 2 hours.

Have played Max payne 3 and battlefield 3 for very long periods (BF 3 for at least 2 hours and 30 minutes) and it has been fine *touch wood*
 
Nexus18 said:
No problems since adjusting the power control limit. I need to get around to playing BO II for longer to make sure that the problem has truly gone and not just been delayed. BO II was/is the worse for lock ups from my experience followed by FC 3, don't recall having any problems with other games like crysis 2, TWD etc. Only tried sleeping dogs out after changing the power control limit but no problems with it after playing for about 2 hours.

Have played Max payne 3 and battlefield 3 for very long periods (BF 3 for at least 2 hours and 30 minutes) and it has been fine *touch wood*
Click to expand...

Will stick this card back in tomorrow morning then and hunt out this little slider and give sleeping dogs another crack, think the most ive had on that is an hour, same with sims 3, but the gf has been on it 4 hours now with my old card so its definitely something to do with the card.

...shall report back tomorrow :D
 
wazza300 said:
what motherboard are you running? tried with the power control slider in ccc/overdrive at 20%?
Click to expand...

I dont wish to jinx things but the gf has been on sims3 for just about 2 hours and its not done anything...

Dont leave for work until 11 so up early for a few hours of sleeping dogs to test it...but i feel it may have worked mate thank you ever so much :)
 
The gf has kindly just woken mme up to tell me its happened again...but the screen has gone white this time instead of black :( any more ideas or should i rma the card?? :(
 
Have just tested sleeping dogs, only got about 10 minutes out of it, i then got red and dark lines going down the screen...the sounds carried on for 5 seconds or so and then hung...had to power off :(

This is getting rather frustrating now :p
 
Damn, sorry that didn't work :(

Next thing I would suggest is drop the OC on the GPU using MSI afterburner.

If that doesn't work then try out the stuff that was mentioned throughout my thread, if none of that works or you can't do some stuff like change the RAM or/and MB then just RMA the card and see what happens.


Unfortunately there seems to be a lot of problems similar to yours and mine with the 7850 :( :confused:
 
Sigh :(

Does it come oc? As all ive done is move that slider to 20%

Can swap the ram out for my older stuff...not sure about a mobo though...the fact it passes all gpu tests makes me think if i rma it they will just say nothing is wrong with it :(
 
Yup and quite a high overclock too! Unless you linked to the OC version accidentally? :p

I didn't do any benchmarks etc. (apart from run memtest) because in my search for a solution, the majority of people who experienced the same problems said that it would pass benchmarks etc. just fine, the only time it happened was during games.
 
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