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re: Mup.sys? Hangs but not? Wha's happening?
Saturday, January 17, 2004 at 9:05 pm
Windows XP Annoyances Discussion Forum
Posted by Sean (2 messages posted)


OK.  I *think* I have a final solution to all of this!  1st, the short answer:  reset 
ESCD in your BIOS.  Now for the long answer:

I had the EXACT same problem as Justin below here although my hardware was TOTALLY 
different.  Just as it seems with all the other sufferers of this issue.  After trying 
absolutely everything that was suggested on this thread with no success, I started 
realizing that some of the posters were right:  this problem has nothing to do with 
mup.sys.  It has everything to do with what gets loaded after it; and that seems 
to differ from machine to machine since hardware configs are so vastly different.

ESCD is the part of the BIOS that handles allocating resourcs to Plug n Play devices. 
Sometimes it gets freaked out and needs to be reset.  Some BIOS's do this for you 
if you make a hardware change (remove a card, change memory slots, move USB device 
locations, etc)  Thats why there have been x number of different fixes for this problem. 
I remember seeing "Updated ESCD Successfully" on other motherboards I've owned in 
the past, even though I never told it to do so.  I've also noticed that adding hardware 
causes the ESCD to freak out somtimes requiring a reset; although I added no hardware 
to cause it to happen to me.  I just put some thermal grease on my processor/heatsink. 

Here is a link describing ESCD:  http://www.pcguide.com/ref/mbsys/res/pnpESCD-c.html

I hope this helps shed some light on this very frustrating problem.





On Thursday, January 15, 2004 at 8:45 pm, dustin wrote: >I have the similarly described MUP issue. I was at home the other day, and all of >the sudden, my PC just reset, like as if it had lost power. Then it came back and >got to "windows XP professional" and it has a progress bar, this is a black screen >with the XP logo. then, before the windows blue/teal screen comes up, it reboots >again as if the Reset button was pressed. >now it is doing this constantly. it is in a 'boot loop'. At this point, I decided >that this may be some type of hardware failure. I began to remove various HW, down >to the point that I have RAM, 1 HDD, and AGP video card. still same result, getting >a boot loop. Then I tried disabling everything in the BIOS, onboard NIC, usb ports, >etc. still getting a boot loop. then i tried to boot with safe mode. Yesterday >i got safe mode to start OK, but i wasn't sure what to do at that point. I then >rebooted, and same results. today, I got more extensive. I decided to reload >win XP Professional. I reloaded, and am able to get to the setup program and the >bootable CD works great. I tried to have setup "repair" windows. It ran itself, >then it has the same result after rebooting. boot loop. Now i load the XP cd >again, and I can go to recovery console. well, i am not a MCSE on XP or anything, >so I didnt know what to do from the recovery console. >This is really starting to kill me here. I didnt change ANYhting. I have a spare >12GB known-working HDD. I swap this drive into the machine. then I load XP on >the blank HDD it sees the partition, it is NTFS. it loads all of the XP files. >reboot, and STILL no luck, getting this same boot loop. now we have clean new SW >loaded, and a different HDD and no go. I then tried removing all HW, except AGP >card and RAM and HDD. still not working. >I then brought the PC to work with me, I am a support rep at a SW company, so I am >thinking i can get a good second opinion from a co-worker. they suggested all of >the above, go to bare bones system, and start swapping out HW. so I swap all >components with known-good parts. swap the video card with a known good card. nope. > swap the RAM with known good RAM. Nope. then i tried the above diable MUP. >I used the XP recovery console to disable MUP.sys. it disabled itself. still no >luck. if i try safe mode, i get to sisagp.sys and hangs there now. if i try last >known goodd configuration, then the screen just turns blank and it sits there. >if i use safe mode with network or just safe mode, it gets to the sisagp.sys and >just hangs. I am at a loss. These posts say that a new processor resolved this >issue. that is the only thing that I have not swapped. I cant think of what else >would cause this. >here is my HW. it is a P4 1.7 256MB pc2100 ddr 12GB western digital HDD. 64MB >nvidia gforce III ti200 ps/2 keyboard, and i did have an optical USB mouse. I havent >tried to unplug the mouse while it is stuck on the mup.sys error. >Please help!!!



Written in response to:
re: Mup.sys? Hangs but not? Wha's happening? (dustin: Thursday, January 15, 2004 at 8:45 pm)

Responses to this message:
*Why this problem might never return, once fixed. (Andreas: Wednesday, February 4, 2004 at 3:53 pm)

All messages in this thread [show all]
-Mup.sys? Hangs but not? Wha's happening? (Brian: Wed, Mar 12, 2003, 9:12 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Mike KNox: Tue, May 20, 2003, 8:05 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Brian: Tue, May 20, 2003, 1:58 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Gary Thonerfelt: Thu, May 29, 2003, 11:10 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Brian: Thu, May 29, 2003, 11:51 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Richard Prescott: Tue, Jun 3, 2003, 5:03 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Brian: Tue, Jun 3, 2003, 6:15 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Bob Corrado: Sun, Dec 2, 2007, 2:45 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Vincent: Mon, Dec 17, 2007, 12:10 am)
-re: Mup.sys? Hangs but not? Wha's happening? (cdavis999: Fri, Dec 28, 2007, 7:51 am)
-re: Mup.sys? Hangs but not? Wha's happening? (L W Peacock: Mon, Dec 31, 2007, 11:17 am)
-re: Mup.sys? Hangs but not? Wha's happening? (cdavis999: Fri, Jan 4, 2008, 8:49 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (LMC: Wed, Jan 9, 2008, 10:16 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Frag-IT: Thu, Jan 31, 2008, 6:34 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Ryan: Tue, Jan 6, 2004, 11:26 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (daniel: Tue, Apr 20, 2004, 10:31 am)
-re: Mup.sys? Hangs but not? Wha's happening? (dr_spain: Thu, Jun 17, 2004, 6:23 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Ben Chamlet: Sat, Jun 19, 2004, 3:50 am)
*re: Mup.sys? Hangs but not? Wha's happening? (mahjoob: Sat, Jun 19, 2004, 12:07 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Sean: Fri, Jun 24, 2005, 2:11 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Preston Hudson: Wed, Sep 29, 2004, 9:42 am)
*re: Mup.sys? Hangs but not? Wha's happening? (DooGie: Sat, Oct 2, 2004, 1:41 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Chowell: Mon, Aug 8, 2005, 9:41 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Rick: Fri, Jun 13, 2003, 11:26 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Jay: Tue, Jun 17, 2003, 7:57 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Albert Lim: Thu, Jun 26, 2003, 3:08 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Albert Lim: Thu, Jun 26, 2003, 3:39 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Homer Simpson: Mon, Dec 22, 2003, 10:10 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Tristan: Tue, Jan 27, 2004, 11:10 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Shaun: Sun, Feb 29, 2004, 10:06 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Spyder: Wed, Mar 22, 2006, 5:20 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Josh: Wed, Mar 29, 2006, 2:44 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Patrick: Tue, Feb 3, 2004, 1:01 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Dan: Thu, Jun 26, 2003, 2:34 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Albert Lim: Thu, Jun 26, 2003, 3:49 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Fernando: Sat, Feb 14, 2004, 1:27 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Mike: Thu, Feb 19, 2004, 8:26 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Morrian: Fri, Jun 27, 2003, 10:36 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Jeff: Tue, Jul 1, 2003, 10:06 am)
-re: Mup.sys? Hangs but not? Wha's happening? (l sandell: Sat, Jul 5, 2003, 7:25 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Sean: Mon, Jul 21, 2003, 11:43 am)
-re: Mup.sys? Hangs but not? Wha's happening? (rick: Mon, Jul 21, 2003, 9:39 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (ddd: Tue, Jul 22, 2003, 1:51 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Tony: Wed, Dec 31, 2003, 4:09 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Rob Navarro: Sat, Oct 1, 2005, 9:58 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Rob Navarro: Mon, Oct 3, 2005, 7:59 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Seventh-Monkey: Thu, Jan 1, 2004, 7:21 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Paul 101: Sun, Jan 4, 2004, 4:24 pm)
-How do I disable mup.sys (Jim: Fri, Jan 2, 2004, 7:05 am)
-re: How do I disable mup.sys (TheLANlord: Fri, Jan 2, 2004, 12:00 pm)
*re: How do I disable mup.sys (BombIraq: Wed, Feb 18, 2004, 10:40 am)
-MUP.sys hangs WindowsXP - solution (Paul: Sun, Jan 4, 2004, 6:04 am)
*re: MUP.sys hangs WindowsXP (Samuel Tan: Sat, Jan 17, 2004, 9:14 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Tom: Mon, Jan 5, 2004, 6:07 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Seventh-Monkey: Tue, Jan 6, 2004, 9:22 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Tom: Wed, Jan 7, 2004, 12:32 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Pasi Pitkanen: Wed, Jan 14, 2004, 1:47 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Dave932932: Fri, Jan 28, 2005, 7:15 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Jeff: Tue, Jan 6, 2004, 7:25 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Greg: Wed, Oct 3, 2007, 8:37 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Michael Williams: Fri, Oct 26, 2007, 11:41 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Gene Walker: Mon, Nov 5, 2007, 7:04 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Loren: Sun, Nov 18, 2007, 3:23 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (gene jacobson: Mon, Nov 26, 2007, 1:06 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Grumpy Pete: Fri, Nov 30, 2007, 11:42 am)
-re: Mup.sys? Hangs but not? Wha's happening? (scamquist: Wed, Jan 14, 2004, 12:06 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Phychotron: Thu, Feb 12, 2004, 1:00 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Gaurav: Tue, Jun 26, 2007, 3:43 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Jeff: Thu, Jan 15, 2004, 8:31 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (AJ: Sat, Jan 17, 2004, 7:16 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Chas: Sun, Jan 18, 2004, 6:54 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Matt Schanke: Mon, Jan 19, 2004, 1:22 pm)
-re: Mup.sys hang SOLVED (Mark V: Sun, Jan 25, 2004, 7:21 pm)
*re: Mup.sys hang SOLVED (Jim Spevak: Fri, Sep 24, 2004, 9:17 pm)
*re: Mup.sys hang SOLVED (Lauren Michaels: Wed, Mar 29, 2006, 8:03 pm)
*re: Mup.sys? Solution, winxp sp1 (frank: Thu, Apr 29, 2004, 3:51 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (moses: Mon, Jul 12, 2004, 3:07 am)
*moses, your solution worked! =) (EK: Tue, Sep 7, 2004, 5:21 am)
*how to copy ms xp hdd (sanjay: Tue, Jul 18, 2006, 2:55 am)
*re: Mup.sys? Hangs but not? Wha's happening? (christopher: Sun, Apr 2, 2006, 1:58 am)
-re: Mup.sys? Hangs but not? Wha's happening? (dustin: Thu, Jan 15, 2004, 8:45 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Sean: Sat, Jan 17, 2004, 9:05 pm)
-Why this problem might never return, once fixed. (Andreas: Wed, Feb 4, 2004, 3:53 pm)
*re: Why this problem might never return, once fixed. (Sean: Thu, Feb 5, 2004, 5:17 pm)
-Rebooting loop even before xp starts up, suspect graphics / memory or simply a CMOS setting!? (Marco: Tue, Jan 23, 2007, 12:03 am)
*re: Mup.sys? Hangs but not? Wha's happening? (sawman: Thu, Jan 25, 2007, 4:42 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Cam: Mon, Mar 7, 2005, 12:21 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Dan: Tue, Mar 22, 2005, 5:09 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (dlb: Wed, Jan 21, 2004, 7:08 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (SomeGuy: Fri, Jan 23, 2004, 7:58 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (SomeGuy: Fri, Jan 23, 2004, 8:30 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Nikolaj N-R: Sun, Mar 21, 2004, 11:02 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Shane: Tue, May 4, 2004, 9:48 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Onionfx: Mon, May 10, 2004, 2:44 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Noxeos: Tue, May 11, 2004, 11:26 am)
-re: Mup.sys? Hangs but not? Wha's happening? (skeelie: Tue, May 11, 2004, 11:20 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Jake Foley: Sat, May 15, 2004, 6:32 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Attractiveman: Wed, Jan 25, 2006, 7:17 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Steve: Sat, Jan 24, 2004, 2:28 pm)
*How I fixed my computer... (Martin: Fri, Jan 30, 2004, 4:30 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Nigel: Sat, Jan 31, 2004, 8:24 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Nigel: Sat, Jan 31, 2004, 2:35 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (MM: Fri, Feb 6, 2004, 2:35 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Fisu: Thu, Feb 12, 2004, 7:05 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Dave: Sat, Feb 7, 2004, 6:04 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (Scramble: Mon, Oct 4, 2004, 6:12 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Shane: Sat, Feb 7, 2004, 4:14 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Roger McHugh: Sun, Feb 8, 2004, 2:35 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Shane: Sun, Feb 8, 2004, 3:20 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Catherine: Mon, Feb 9, 2004, 1:46 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Fisu: Thu, Feb 12, 2004, 7:17 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Catherine: Thu, Feb 12, 2004, 7:24 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Fisu: Thu, Feb 12, 2004, 7:53 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Catherine: Thu, Feb 12, 2004, 8:00 am)
-re: Mup.sys? Hangs but not? Wha's happening? (Fisu: Thu, Feb 12, 2004, 8:11 am)
*re: Mup.sys? Hangs but not? Wha's happening? (Fisu: Sat, Aug 21, 2004, 10:32 pm)
*re: Mup.sys? Hangs but not? Wha's happening? (peterpanmalta: Tue, Aug 31, 2004, 11:58 pm)
-re: Mup.sys? Hangs but not? Wha's happening? (Jerry: Thu, Feb 12, 2004, 10:04 am)