I have a just got a computer with Asus P5Q motherboard, the problem is that the computer won’t shutdown when I have installed the included Marvell 88se6111 driver. When I click the shutdown button in Windows the: keyboard, mouse, harddrive and monitor turns off – but all the fans and the CPU are still running and there is still light in the power-led on the case. I can’t wake the computer up…. all I can do is to turn the computer off by pressing the power-button for more than 4 seconds, and then the computer turns off. I have updated Bios and the Marvell drivers to the latest but it didn’t help. When I uninstall the Marvell driver Windows can turn the computer off just as it’s supposed to.

I have a similar problem with my Asus Maximus but mine reboots instead of semi shuts down.

Thanks, I think you just let me know what my problem is.

Please post a reply if you find a solution.

have the SAME EXACT issue as the op. if anyone has any idea what the solution is please do tell!

I would check with asus support, or browse through the asus forum as there might be a thread on how to fix it.

I have the same issue. Anyone solved this problem? Reboots works fine, but shutdown just hangs.

It doesn't seem to be caused by the Marvell drivers on my system (even though I'm experiencing the exact same symptoms). I've tried deleting the drivers and disabling the Marvell controller in BIOS, but I still can't shutdown properly.

Have the same problem (Running Vista). The funny thing (well not so funny) is that it shuts down fine in Safe Mode... Any further ideas?

Add another P5Q user to the list. Same issue as OP

I had the same prioblem with my P5Q-E.

This is my last letter to ASUS: - and - SOLUTION OF PROBLEM!!!

"I have got 2nd, brand new motherboard again,
and the problem is the same - computer woun't power off with installed Marvell 88se6121 SATA drivers.

I HAVE FOUND WHAT IS THE PROBLEM!!!

I have only one IDE drive,
CD-RW Plextor PlexWriter Premium 2,
connected via IDE cable to motherboard,
and it is connected as "MASTER" drive.

THAT IS THE PROBLEM!!! - connection as "MASTER" drive!

If I connect it as "SLAVE",
OS and my computer succesfuly go to shutdown and power-off!!!

So, can you explain me now where is the problem in that,
why computer woun't power off with installed Marvell 88se6121 SATA driver
and CD-RW drive connected as "master" via IDE cable on motherboard?"

One more P5Q-E user with this problem. I assume that it isn't a good idea to not use the Marvell SATA drivers...and I really kinda want to keep both my IDE DVD drives (and that is really strange if that is the problem). I hope they come up with a better fix than "don't use a Master IDE drive" soon. I'm wondering if setting the IDE drives to "Cable Select" might help.

I got this issue as well and I'm glad I found this thread.

I have a new system with the P5Q motherboard and mine doesn't powerdown as well.

Windows shutdown works fine, but the system does not power down.

I have an IDE Plextor burner as well, and I think it's connected as master.
So I hope that will fix my problem.

Same problem here:

Winxp pro sp3
P5K SE/EPU
Marvell 88SE6111 sata/pata controller

confirmed lockup, same conditions. screen/hdd off, only psu is powered on.

removed master IDE-cdrom drive from cable, and shutdown works!
Cable select has no effect, problem persists.

I guess using only a slave is the only way untill there is a fix

Same problem:

P5Q PRO
Win XP
2 Plextor IDE drives
In my case, i have changed to my older PC the MoBo, processor, memory and Power Unit. My older configuration was based on a A8N-SLI, AMD 4400.

I removed old drivers related to the A8N-SLI (based on Nvidia NForce 4).

All is fine instead of the Power Off. System shut down but fans are still on after shutting down the system.

I also have this problem, however I only have 1 sata disk and 1 sata dvdrom installed.. So why I got this problem i cant figure out..

Anyone have any clue how to fix this?

I have a P5Q Pro and Don't have this problem. Latest BIOS and latest Drivers from website.

Vista x64 Ultimate
Antec 900 Mid Tower Gamer Case
Corsair TX750W 750W
ASUS P5Q Pro LGA775 P45
Sunbeam Core Contact Freezer 4 Heatpipe Heatsink
Intel Core2 Quad 66000 [G0] 2.4GHZ @ 3.19GHZ [355 x 9 @ 1.4v]
OCZ Platinum XTC PC2-6400 4GB 2X2GB DDR2-800 CL5-4-4-15 V2.1
EVGA E-GEFORCE 9800GX2 600MHZ 1GB 2.0GHZ GDDR3
Western Digital Caviar SE16 640GB SATA2 7200RPM 16MB
Western Digital Caviar SE16 500GB SATA2 7200RPM 16MB