re: Mup.sys? Fixed it simply with a checkdisk on C:\
Friday, September 10, 2004 at 9:15 am
Windows XP Annoyances Discussion Forum
Posted by Stephen Firestone
(1 messages posted)
I had a friend who brought me his machine which bluescreened and rebooted 3 days
ago while surfing.
Upon reboot, windows XP home hangs with a 5 minute delay, followed by Scandisk, them
reboots upon exit. Upon starting safe mode, makes it to Mup.sys, HDD activity, long
delay then scandisk for both "Normal", "Safe", and "Last Knaown" Modes. Unfortunately
for this person, who bought the XP home OEM version, there is no repair installation
option. I tried to remove USB and use "Last Known Good Configuration" but to no
avail. Scandisk found several truncated files in the "\Windows\System32\DLLCache"
folder. I will end up doing a full reload after I can get his pertinent directories
and profile info backed up.
The thing that floored me was what happened this morning on my personal machine,
running Windows XP Pro, hung upon bootup. These machines have shared no connection
or data.
My machine has acted a little funny over the last couple of days. I immediately
suspected either Spyware or a Virus. Scanned it with everything but the kitchen
sink(waiting for someone to port it).
When my machine hung upon bootup I tried safe mode. BAM!! HUNG AT Mup.sys (What
are the odds?).
I have read this problem thread and saw where several people have had luck with removing
USB devices then picking "Last Known Good Confiuration" so I removed my Logitech
optical USB mouse, and older Acer USB scanner and the picked "Last Known..." from
ther boot menu. Windows booted like a charm as if nothing had ever happened. I
plugged in my Mouse and scanner, which were immediately detected.
I plugged in my scanner(which has been plugged and unplugged many times due to space
constraints), last week to scan a few photos. Since the lockups were sporadic and
intermittant at best there was no clear cut indication to pinpoint the instability.
Incidentally, my machine:
Asus P5S-553MX with onboard video disabled
P4 Northwood 1.8Mhz (at 2.4GHz stable for 6 months)
400W ATX dual fan PWS
2 x 512MB DDR4000 Kingmax DIMMS @ 266MHz
ATI Radeon 9600 Pro All in Wonder AGP
3COM 3C905B 10/100 PCI NIC
No modem
Creative Labs Audigy 2ZS OEM
Promise S150-TX2 Plus SATA/ATA133 PCI Raid
2x 80GB Seagate SATA HDD in RAID0
Lite-On SOHW-1213S 12X DvdRW/48X CdRW Writer
Plextor 12X CdRW
Logitech Optical USB mouse
PS/2 104-Key Keyboard
Acer Prisa USB flatbed scanner(when in use)
Palm M505 & Cradle (occasionally, hotsync disabled)
Windows XP Pro SP1 OEM(Clean Install, Legit COA)
XP SP2 *not* Installed
Unneccesary startup services, apps, drivers disabled
My friend's machine:
Abit KR7A RAID
512MB DDR PC2700 Ram (Brand Unknown)
ATI Radeon 7500 All in Wonder
Creative Labs Audigy 1 Platinum
56K internal PCI modem
80GB ATA133 No RAID
Creative 16X DVD reader
Generix 32X CdRW
Logitech Cordless freedom Optical USB KB/Mouse
Creative USB Web Cam
Windows XP Home OEM (Clean Install, Legit COA)
XP SP2 *not* installed
I read 20 threads on MS Knowledgebase also this morning about USB problems and power
management and disabled, "Allow this device to turn off this device to save power"
In all occurences of "USB Root Hub" in USB Controllers of Device Manager in Control
Panel. I do not allow windows into Suspend or Hibernate modes. I will allow it
to blank the monitor but not spin down drives.
I hope this helps anyone who is experiencing this to recover.
Stephen Firestone
On Friday, September 10, 2004 at 6:02 am, Segcom wrote:
>XP SERVICE PACK 2 Mup.sys issues. Seems to me for all I have read mup.sys hanging
>problems are hardware/bios related. I have an ASUS P4SP-MX motherboard that workd
>fine until I updated to XP Service pack 2 then I got the dreaded mup.sys hang in
>safe mode. I upgraded my BIOS and All was fine. A friend of mine also had the same
>problem after upgrading to XP SP2 he had to disable his on board USB ports and buy
>an additional PCI USB card to fix his problem. I guess his BIOS didn’t work with
>XP SP 2. I advised him to keep a check for a new version of BIOS. If you have an
>old motherboard it may be time to update.
>
>
>
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