MUP.SYS hangups (XP Pro SP1)

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I’ve installed XP pro on a new computer. After a few software installs, the PC has started to hang on boot up. I watched a boot-up log, and saw it hang up at MUP.SYS. If I used “Last Configuration that worked, I can get started, till I need to start WinXP again. One comment said the USB card might be a problem. Can’t do that, the USB is on board the mobo (ECS K7S5A) Any ideas how to get past this?

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Cowboy,
Thanks for the suggestion. However, these links talk about possible virus or other “outside” attacks. My system is new, not even connected to a LAN, and I get this. (Though I’m now connected.) It seems the boot process fails a random number of times (I’ve gotten to 6) before I get lucky and WinXP can load.

As for removing components, the mobo is pretty self contained. I did strip down to the AGP video, mouse, kbd, the main HD and the CD. Still get this error. I even booted from my old Win98 drive, and no problem there.

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Mup.Sys is the last driver loaded before the graphic user interface appears. Did the mup.sys problem happen after you applied sp1? Or has this been a problem from the get go? When did you note the beginning of this problem? If you have some restore points – you could try a system restore. Any reference to it from your event logs?

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The “gettest” go you can have. I built the computer. The second time I fired it up, I began having the problem. I use the computer now, but it’s russian roulette for starting. (using the restart button on the case) between three to six times. Sometimes I wonder if the problem begins during shut-down. That seems to take a while.

Now get this: I built two machines, the only differences being in the hard drives (both drives are recent enough to handle XP Pro). One machine: no problems at all. This one: the boot hangup.

Bruce – (I think) it’s USB 1.

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Have you considered motherboard drivers as a possibility? Do you have SCSI drives? I do not mind the but I once had a Gateway server that hung on mup.sys and it was a motherboard problem…

You might want to list some of your event log here with both source and ID#

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Like I said, I have two duplicate machines. Using an ECS K7S5A Mobo with AMD Athlon 2000. And I will be building one more soon. The board comes with a set of SiS drivers. No SCSI involved.

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So did you change any CMOS settings?

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From what I’ve read, this issue seems to revolve frequently around new hardware installs & custom-built rigs. If you have recently updated to SP-1, this fix seems to have worked for a few people in your shoes: Uninstall Security Update Q311967. This update appears to have replaced the mup.sys.

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Do you have a USB 2.0 card The reason 98 doesn’t have this problem is Mup is an NT item.

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Can you disable usb from the bios? I have read about k7s5a’s having usb problems, one in particular recently having a lot of problems with usb dropping out on him. Can you RMA the board? Your’s wouldn’t be the first motherboard ever to not work properly!!! I would suggest returning it if possible and starting fresh….

kip

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Thanks everybody for your suggestions. I did reset the CMOS, no joy. I was planing to build (another) duplicate machine, so I swapped the mobo. The new mobo could reboot with NO PROBLEM! So, I took my original back & swapped it for another. Moral of the story: It could be something on the mother board, as well!

Thanks again!

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