GA 890fxa ud7 will not boot

[Dark Mantis]

I have found a list of all the CPUs the motherboard will support.

http://www.gigabyte.com/support-downloads/cpu-support-popup.aspx?pid=3416
Hope this helps

[zinchead]

thanks for this.
There is an Phenom II X3 740 listed, but min e is an x4.

I will check timorrow full spec, which I may have got wrong.
I need to get this machine up and running again, to get full specs.

cheers

[absic]

As far as I am aware it should because AMD sockets are backwards compatible but I am not 100% sure so I should check first. Absic is the man to ask but he is not here now. Maybe someone else will know. I notice Venganza is on the forum and he is pretty genned up on that sort of thing. Maybe PM him.

Be careful here. AM3 CPU's will fit into AM2 & AM2+ Motherboards but it doesn't work the other way around. There is one less pin on the AM3 CPU and if you try to install an AM2 or AM2+ CPU onto an AM3 Motherboard it just won't go.

Before RMA'ing anything  have you checked the silly things such as Keyboard, mouse, USB drives/hubs that you may have installed. I have actually gone through the process of practically re-building a machine that died only to eventually discover after many hours and much money, that the mouse  (one of the cheapest components) was faulty.

[zinchead]

checked my older processor.
Its a Phenom 9600 x4 2300mhz.
Not list on http://download.gigabyte.eu/FileList/Manual/mb_manual_ga-890fxa_ud7_v2.0_e.pdf: kindly linked by Dark Mantis.

I have decided to ask rma the processor only and ask the suppliers to check it themselves.

I'll keep everyone posted.

Has anyone aware of faulty x6 processors out there. Just so I can oput up a defence.

[ex58]

GA-890FXA-UD7(v.2.x) -BIOS F3

   1. Update CPU AGESA 3.7.1.0
   2. Fix audio noise issue while running ET6 in Win7

Note: Please set “Keep DMI data” to “Disabled” while using Q-flash for BIOS update

[Dark Mantis]

checked my older processor.
Its a Phenom 9600 x4 2300mhz.
Not list on http://download.gigabyte.eu/FileList/Manual/mb_manual_ga-890fxa_ud7_v2.0_e.pdf: kindly linked by Dark Mantis.

I have decided to ask rma the processor only and ask the suppliers to check it themselves.

I'll keep everyone posted.

Has anyone aware of faulty x6 processors out there. Just so I can oput up a defence.

Not that I am aware of but that doesn't mean there are not any! All batches of chips have their bad ones.

[absic]

Just to back-up what DM says. I have done a bit of searching on the net and there doesn't seem to be a problem with the X6, but there is always the chance that the CPU is dodgy.

[oggmonster]

Ive personally never come across a faulty processor, only time i have is when people have put silly volts through them (2v or so) or the old processors where if the fan failed they would 'leap' out of their sockets.

Though like everything they do have a failure % i just think probability wise - if there is a fault - it will lie with the motherboard.

[zinchead]

I would tend to agree thats there is more chance of a bad batch of mother boards as opposed to cpu s.

cheers for the helpful posts

[zinchead]

Well I rang to get views  of my pc component supplier.
they suggest that the G skill memory is not compatible with my motherboard. I said it was on the list of recommended memory from Gigabyte.
he suggests the lower voltage of 1.5 volt over the g skill 1.6 volt is the problem.   Could this be the problem.

They are suggesting that I replace memory with Crucial 4GB (2x2GB) DDR3 1333MHz/PC3-10600 Memory Kit CL9 1.5V  CT2KIT25664BA1339
Slower, I know : would I see any difference.

Anyway I checked the" tinternet ".  This thread at "www.xtremesystems.org/forums/showthread.php?p=4479524" seems to be reporting issues where the first bios is not working. This certainly seems to be my problem. Bios corrupt type of problem.
However, they are using tricks to "force to boot off backup bios"  which I am not familiar.

Can anyone advise on this subject?

I just found another thread where a guy has same problems as me, but no solutions: "http://www.overclock.net/amd-motherboards/781946-help-gigabyte-890fxa-ud7-dual-bios.html"

[absic]

Well, it could be the problem and the only way of knowing for certain would be to swap it out. The AM3 CPU's do seem to run much better with 1333 Mhz RAM and, if you check through the specs they are designed for this speed of RAM or slower because of issues with the memory controller.

You can get 1600 Mhz RAM running but it is unclear if this is entering the realms of Overclocking and there has been no clear answer to this from Gigabyte, AMD or the Memory & other Mobo  manufacturers. You will also find that if you want to run above 1333 Mhz you will usually have to do so in Unganged (single channel) Mode.

Will you notice a difference between 133 Mhz RAM and 1600 Mhz RAM.To be honest no, unless you want to run benchmarks all day and not do any serious computing. In fact you will actually gain more of a performance boost by running RAM at 1333Mhz and overclocking the CPU and if your 1090T is anything like mine, you will be able to get it to 4 Ghz without any real problems.

I am running 8 Gigs of Corsair Dominator CMD4GX3M2B1600C8 on my GA-790XTA-UD4. This RAM is designed to run at 1.65V and in unganged mode I can run at the rated speed without any problems. If I want to run it at 1333 Mhz it will run quite happily at 1.5V not sure if this info clouds things for you but, it might just help you formulate a plan.

[Dark Mantis]

I totally agree with absic's comments and the difference between the two memory speeds is negligable in a real world scenario. Stability is king

[zinchead]

Just to keep yeah all abreast.
I was sent new crucial DDR3 1333MHz/PC3-10600 Memory Kit CL9 1.5V. I installed it, but still no change.
Supplier is taking all my kit back; motherboard, processor and memory, to test it themselves.

I await a return soon.

cheers