Motherboards GA-790X-UD3P - will NOT post, at all!!!

been a long time since I been on here,

I have a MAJOR problem,

around xmas time I decided to buy some new parts from a new supplier...Scan...as they seemed to have good things said about them on this forum.

I bought:

• GA-790X-UD3P mother board
  
• ATI - radeon 4890 graphics card.
  
• Corsiar 80GB SSD

I pulled some parts from my old system:

• AMD Phenom 9950
  
• 4GB of Geil ram DDR2-800
  
• 750W PSU with all the right connectors
  
• SATA DVD -RW
  
• and stuck in another 500Gb SATA hard drive

Plugged everything in and...nothing...power came on and sweet FA, no display, no POST beep.

did the usual fault finding, pull out parts, plugged in different ones, still nothing.

pulled out parts and left them out and not even any POST error beeps.

.....diagnosis: mother boards had it.

set it back to Scan who set it back to me with a £25 bill saying its working!

I then changed the CPU for an older CPU, just in case the BIOS didn't recognise it... still nothing.

checked the psu, tried again still nothing.

nothing nothing NOTHING!!!

this is now driving me up the wall, I can't return it cos scan say its working and I have rung them recently and told me this....stop short of driving down to bolton from york with my system and SHOWING them its not working, I have not many options.

so...for the love of god before i turn £500 of kit into scrap...please someone give me some advice!

 

At this point Scan has nothing to do with your purchase.
If you have any problem with your board, you should seek Gigabyte for a possible RMA under your warranty (if the board is your problem).

My best guess is that your PSU doesn't support the latest ATX standard, or is broken. Can you try a different PSU, what is your PSU brand and model?

 

Or you can take the battery out of the mobo to clear the bios, worth a try i guess.

 

sorted it, I took it all apart and started right from scratch.....turns out the CPU I'm using is not supported by the BIOS....I tried and old AMD AM2 X2 4200+ and bingo! POST!

Tried a Phenom 9950 AM2+ and nothing....which means a BIOS update SHOULD enable me to use newer processors.

which now leads to a question....why then are BIOS technologies suffering of going out of date before they have even lef the suppliers shelves, surely some technologies should exsist whereby you can update the BIOS without having to stick all the parts into the board and get it posted before you flash the BIOS with an update.

surely a system where you can plug a USB flash drive into the mother board with power, swtich over a jumper, run a simple flash program off an small embedded system. I'm really suprised nobody has thought of this!

 

The 790X is not a new board, the likelihood is that it's been sitting on Scan's shelf for a year or so. I'm surprised the 9950 isn't supported though, that's not a new chip either.

Asus has something called USB flashback that can do it from a USB key, but it's only available on the most expensive RoG boards.

 

I come bearing more problems from this board....

I updated the BIOS incremently from F1 to F6 using the 4200+ and rebooted the PC, POSTed fine and came up with "BOOT DISK NOT DETECTED" which is what you'd expect as I have no OS yet.

Then put in the Phenom 9950, and nothing, no POST. I then tried the AM3 Phenom 945 and still nothing. it just sits there, the fan on the graphics is going full tilt as is the CPU fan, which is what was happening the first time.

I then thought right...the only thing that are different on each chip are the power requirements.

The mother board does support all 3 CPU's I tested with the BIOS updates, so I checked the output of the +12V lines on my PSU (http://thermaltakeusa.com/Product.aspx?S=1207&ID=1508#Tab1) and all of them put out 18A max (216W) so it not like they are being underpowered.

I'm at a loss now, I guess the only thing to do now is contact Gigabyte and ask for their help, does anyone know how to get in touch with their technical support in the UK? does anyone know if they do technical support for end users?

just for reference, here's the link to details of my Motherboard:http://www.gigabyte.com.tw/Products/Motherboard/Products_Overview.aspx?ProductID=3107

 

We have a Gigabyte sub-forum there which you could try, otherwise check giga-byte.co.uk?

Tried with 1 stick of memory? different slots?

 

yep treid 512MB of DDR2 800 RAM with the 945 processor in it. still nowt, have got in touch with some gigabyte tech support, they say to try with a different PSU...as if 750W isn't enough but I suppose wierder things have happened.

but the thing is I'm skint....I can't afford a PSU more power than my own.... nor do I know anyone with a higher wattage PSU.

 

Strangely enough I had this very same problem when I just moved cases.

While I was at it I thought I'd swap about the RAM from my CL5 Corsair to my CL4 DHX Corsair. Put it all back together and nothing happened, no screen, no post, no beeps, nothing.

Now after trying several things, resetting CMOS and rehooking up wires thinking I probably missed a connection or two, I put the original PC6400 CL5 Corsair back in and it worked straight off the bat. The thing is I put the PC6400 CL4 DHX RAM back in its own machine and that all works fine too.

No idea why that would be, no idea at all.

 

This is incorrect. He bought the board from Scan, they are the ones he should deal with. He only needs to speak to Gigabyte if he wants to speed things up.
I'm local to Scan, and used to use them a lot. They are cheap, but their after sales is crap!!

Also, a 750w psu is more than adequate for a mobo with no hdd's, etc, plugged in. I had a similar problem with my Asus mobo, it wouldn't even post with the cpu I bought. Luckily I had an old cpu laying about that would work, I flashed the bios and new cpu worked fine. Your problem seems weird, in that it will work with one cpu, but not others. I'd definitely contact Gigabyte.

 

After the return/exchange date is over, any store are not obligated to provide any support to you. If they do it, that means they are just extra nice. But normally, you should seek the manufacture of the product.

 

Return/exchange date? He bought the board at Christmas, and it comes with a 12 month warranty. So it's Scan's problem until then.

 

Technically, it's scans problem after that.

IF you can prove it's faulty at the point of sale, it's scans problem.

Even 3 years down the line, even if it's a 1 year warranty, if you can PROVE it was faulty when bought, you're covered.


Most retails will never admit it, but it's true.
Sale of goods act is the rule, and it says you can.