HELP: Asus P8P67 USB Devices Randomly Freezing

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krnb0iek

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Apr 5, 2011
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I recently purchased an open box Asus P8P67 board and have been experiencing problems with my USB devices. At random times (idle, light load, gaming), my USB devices seem to be freezing. It seems like the power is getting cut off or something since the lights on my keyboard and mouse aren't lit when they freeze. I have updated my bios to 1850, installed all drivers, and still have this problem. Anyone know a solution to this before I request for RMA?
 
Is the entire system freezing as well?

I had this issue awhile ago on multiple boards (two P8P67 Pro's and one Sabertooth). I eventually RMA'd my ram and it has been golden ever since. There are a couple threads dealing with this issue in this subforum if you are indeed experiencing the exact same freeze.

You could try disabling Cstate reporting (C3 and C6 I believe) in the BIOS and see if that helps. Also, raise the DRAM voltage a tad. These both seemed to help others but really had no effect for me.
 
My WS revolution started doing this last night. no mouse in BIOS, and it's intermittant.
 
Thanks for your reply.

The whole system is infact freezing. If I'm playing a video or a game, everything freezes and my USB devices seem to lose all power. I have read about disabling C3 and C6. Sorry, but what exactly is this? Would it harm my system if I disable them? Also, my ram is currently at 1.50v. I guess I can try upping the voltage on my ram, but I don't thing it's a problem with the ram itself since I have had them on my previous setup and worked flawlessly.
 
I have disabled C3 and C6 yesterday, and so far it is running well with no freezing. Are there any negative effects towards my system from disabling C3/C6?
 
krnb0iek said:
I have disabled C3 and C6 yesterday, and so far it is running well with no freezing. Are there any negative effects towards my system from disabling C3/C6?
Click to expand...

The system just uses more power and may run hotter in idle, and on average. Small price to pay for stability.
 
Is your RAM set to Auto or XMP? Disabling C3/C6 worked for me, too, but other people weren't having the problem with C3/C6 enabled so I kept looking. Eventually, I found that my RAM was set to Auto. As soon as I set it to XMP, the problem never occured again (and that's with C3/C6 *enabled*).
 
bmt22033 said:
Is your RAM set to Auto or XMP? Disabling C3/C6 worked for me, too, but other people weren't having the problem with C3/C6 enabled so I kept looking. Eventually, I found that my RAM was set to Auto. As soon as I set it to XMP, the problem never occured again (and that's with C3/C6 *enabled*).
Click to expand...

Which would be a better solution? Does one do more harm to the system than the other?

1) disabling C3/C6?

OR

2) keeping C3/C6 enabled and setting ram to XMP?
 
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