Sapphire Radeon HD 6850 problems - freezing at desktop

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looka273

looka273

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Aug 12, 2014
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Hello!

I'm posting this from mobile, since my PC is unusable.
I've just acquired a new (it's new for me, guy I bought it from had it running just fine) GPU, Radeon HD 6850 Toxic (I had GTS 250 1 GB before).
Everything seems to work (except no aero and resolution is messed up, but that's normal for my monitor) prior to installing drivers. I go to AMD support page where drivers are downloaded from, I choose my OS, series, etc. and install them. Then it tells me to reboot.
After rebooting, resolution is fine, but everything else isn't. After half a minute, regardless of what I'm doing, PC just freezes and requires manual restart. After restart, same happens.

I did a clean fresh install on both Windows 7 and 8.1 and both are same. I did not try installing older drivers, as I don't know how to get them and from where.

-OS: Windows 7 OR 8.1 (both 64-bit)
-CPU: AMD Athlon II X2 245 ~2.9 GHz
-GPU: Sapphire Radeon HD 6850 Toxic
-4 GB RAM DDR2
-Only HDDs, no SDDs
-Motherboard: GA-M720-US3 (rev. 1.0)
-PSU: Had a 500W one, now adding a 650W from Chieftec
Help is much appreciated.
 
Solution
kemperkipie
If you'd update BIOS it would also wipe the current BIOS, so you'd have a clean start. Eliminating all causes from the BIOS.


Do you have another PC where you can test the GPU? Maybe at home, or at a friends house? Maybe it got defect after you bought it from him.
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looka273

looka273

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Aug 12, 2014
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I will try reseating my GPU later, since I can't do that right now.
As for BIOS, I don't really know how to update it, or what version it is. Don't think it's anything ground breaking, since everything was fine with GTS 250.
 
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looka273

looka273

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Aug 12, 2014
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[strike]I'm sorry, I can't find where it says which model is it. It is though Gigabyte's, DualBIOS, PCI E 2.0, AM2+/AM3 and uses DDR2 memory.[/strike]
I have GA-M720-US3 (rev. 1.0). From Gigabyte's website, I see updates involve CPUs (new ones supported). Don't think it will help here.

I contacted the guy, he suggests another PSU. I have a 650 W PSU I will try out now.
 
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kemperkipie

kemperkipie

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Nov 24, 2011
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If you'd update BIOS it would also wipe the current BIOS, so you'd have a clean start. Eliminating all causes from the BIOS.


Do you have another PC where you can test the GPU? Maybe at home, or at a friends house? Maybe it got defect after you bought it from him.
 
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Solution
looka273

looka273

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Aug 12, 2014
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I just don't feel right about flashing/updating BIOS, I don't want to end up frying my motherboard.
My dad has a PC (I took that 650W PSU from him, but the parts aren't any newer than mine).
I don't think it 's defect. Prior to driver installation, it gives picture, there are no colored lines (like here), no black screen, everything is working just fine.

I tried installing a bit older drivers, from Sapphire website, doesn't work.
 
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looka273

looka273

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Aug 12, 2014
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Ok, he found some hard disc wich oddly enough had Windows 8.1 and 13.2 drivers, and everything is running normal, no freezes. I'll try putting latest drivers on it to see if it's their problem. If it isn't drivers, than it's probably incompatibility between GPU and motherboard.
 
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