Forums > Help! > Laptop help... CMOS error, "the mup.sys hang"

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nearly_all_goneSILVER Member
Pooh-Bah
1,626 posts
Location: Southampton, United Kingdom


Posted:
Anyone got any experience of the dreaded mup.sys hang with Windows XP?

I've trawled the information online, the best advice I found recommended I flash my BIOS but only having my laptop this isn't practical.. I'm going to take the CMOS battery out and leave it for a while, then try again...

I've been through loads of stuff including the automatic windows repair on the xp disc... so my settings will probably be screwed if I ever manage to get it working again...

If I did have to go to a tech in order to get my BIOS updated, does anyone know if this will cost me an arm and a leg? I'm so poor, but I can't live without my laptop, and at the moment it doesn't even load into safe mode...

What a wonderful miracle if only we could look through each other's eyes for an instant.
Thoreau


marcoenthusiast
328 posts
Location: uk


Posted:

Is this a recent problem or the result of hardware / software changes, I've had to deal with this problem on a number of machines over the last year for people, friends, clients etc.

In general and this may not relate to your scenario, but windows xp freezes at mup.sys (etc.) and, there tend to be many reason why this happens, seem to be related and a known problem(s) in Service Pack 2 for Win Xp,

So the initial question will be have you recently applied sp2,

Either way, more details please,

mark

_Aime_SILVER Member
Carpal \'Tunnel
4,172 posts
Location: Hastings, United Kingdom


Posted:
Shout at it smile

SymBRONZE Member
Geek-enviro-hippy priest
1,858 posts
Location: Diss, Norfolk, United Kingdom


Posted:
Do you have an origional windows CD, or one from your laptop maker? If it's a dell (or whatever) 'system restore' CD then it's not much use, but with the windows CD you can repair a windows installation from the setup.

There's too many home fires burning and not enough trees


nearly_all_goneSILVER Member
Pooh-Bah
1,626 posts
Location: Southampton, United Kingdom


Posted:
Sorry guys, been away for a few days. I'd just like to say, the only way I found to resolve the issue was to remove the CMOS battery, leave it for 3 hours or so, then put it in again. This got everything working perfectly - except that I'd already attempted to reinstall windows, before reaching the same hang before it had setup!

If only I'd removed the battery first, my computer would be working fine. As it is, I may need to format my hard drive!

Oh well, I'm now able to burn CDs so making back-ups of all files.

I didn't have SP2, only SP1a (I don't connect to the net with it so haven't bothered updating). There was no change in hardware, but apparently the main point was that it was assigning ports which didn't exist to things... something like that.

If you have this problem, TAKE OUT THE BATTERY before you try any other way! It's simple and your computer should be back to normal with no side-effects.

Right, I'm off to replace my CMOS battery, just in case it does it again!

What a wonderful miracle if only we could look through each other's eyes for an instant.
Thoreau


SymBRONZE Member
Geek-enviro-hippy priest
1,858 posts
Location: Diss, Norfolk, United Kingdom


Posted:
The CMOS just stores setting to do with the hardware on the system - It could be that it lost some info about your drive, but ti's not a solve all problem for startup issues at all.

I'm glad you got it sorted though, biggrin

hug

There's too many home fires burning and not enough trees


nearly_all_goneSILVER Member
Pooh-Bah
1,626 posts
Location: Southampton, United Kingdom


Posted:
Good point, my jubilation was only that this particular problem can easily be solved using my method... if I hadn't tried everything else first, my computer wouldn't be as funked as it is at the moment (although it's slowly recovering... it's a bit like it's had a stroke, certain things will never be quite the same again)

What a wonderful miracle if only we could look through each other's eyes for an instant.
Thoreau


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