GA-990FXA-UD7 Hanging During POST

[Wild Wally]

My PC will stop posting at the point where it identifies the CPU and BIOS revision. It will not go further. I have disconnected my hard drives, reseated my CPU, reseated my memory and reseated all other plugin cards on the PC. This does not produce repeatable results. Once my PC did start up, completed POST and ran fine all day. Another time it completed POST after being frozen for 30 minutes. For the majority of the time, it did not post beyond the CPU identifier/ BIOS rev. The PC will recover from sleep state but not restart even after running fine all day. This started happening a few days ago after a microsoft update but I do not think there is a connection.  This system is not overclocked.

Win7 Ultimate SP1 64bit, 16 GB 1866 GSkill RAM running @ 1333, FX-8150 CPU, HD100 water cooled, GA-990FXA-UD7 rev 1.0 F8 BIOS,850 watt PSU, XFX-6950 Radeon Graphics card, PCI-E 160 GB SSD boot drive, all others SATA 6,3 and 1.5

Thanks in advance, WW

[MarkJohnson]

what error code does your motherboard report?

Did you try just one stick of ram only?

What beeps are reported?

Test each stick of ram one at a time.

Luck
-=Mark=-

[Wild Wally]

what error code does your motherboard report?

50, initializing keyboard and mouse.  Tried another keyboard with a ps2 interface with no luck.  Mouse not an issue afaik.

Did you try just one stick of ram only?

Yes.

What beeps are reported?

Just one.  No errors.

Test each stick of ram one at a time.

Already did.  Simply frustrating.  Could be CPU or MB.  Have a spare CPU but it's a Phenom II and I'm not sure what that would tell me if it worked and the FX didn 't.

Thanks for the reply!  WW

Luck
-=Mark=-

[MarkJohnson]

Try pulling everything and benchtest on the table.

Use only bare minimum.  Not even drives, kybd, mouse.  Just memory and video.  If posts, plug things in one at a time until problem recurs.

If nothing, try reflashing latest BIOS and try again.

luck
-=Mark=-

[Wild Wally]

Try pulling everything and benchtest on the table.

Haven't tried that yet.  Could be a short somewhere I suppose.

Use only bare minimum.  Not even drives, kybd, mouse.  Just memory and video.  If posts, plug things in one at a time until problem recurs.

Did this first since it usually pinpoints the issue but had no luck this time.

If nothing, try reflashing latest BIOS and try again.

I would have done this already but I can't even get that far.  I'm going to retrace some of my steps in case I've missed something or tried to do too many changes at the same time.  Thanks for sticking with me!  WW

luck
-=Mark=-

[Wild Wally]

Solved!   Turned out to be a USB hub which doesn't play well with the extra power USB 3.0 header.  Had to remove the cable too as just disconnecting the hub wasn't enough.

Thanks for the suggestions Mark...I just didn't go far enough at first.

WW

[MarkJohnson]

Congratulatioms!

I don't use USB hubs anymoore for that veru reason.  You don't know how many times I've got hit with that issue.

Have fun
-=Mark=-