Hi guys:
I need some advice about my computer.
It locks up on me if I leave it to go to the mailbox or to the bathroom or anywhere if I don't use it for awhile. It is intermittent and it doesn't do this all the time either. Sometimes I can be gone for hours and it won't do it.
Here is the system specs and what I have tried and what I have found so far.

Private built computer running windows XP Pro version 2000 service pack 2
AMD Athlon 3200+ 2.91 GHz with 1.00 GB Ram
Radeon 9600 graphics card and Invidia sound card

I have Norton Systemworks AV and Firewall installed and enabled at all times.
I also have Spybot S&D and Adaware SE and I have run them all several times. They found and removed some things but it didn't fix the problem.

I checked the event viewer and found an error on a service startup attempt that reads ( CoachWdm service failed startup because a file could not be found.) I checked the location it gave and it says Error 7000 service startup failed and the file it wants is [netevent.dll], which is located in the windows\system32 folder. It is there and search found it.
Now here is the funny thing. The local services does not list this service and it is not in the component services either. I did a registry search and found it under HKEY_local Machine_System_current control set_services.

I went to the microsoft knowledge base and searched for error 7000 and found three ways to repair this problem and the first is a domain user configuration. the second is a single computer fix and the third is a registry edit. I am not on a domain and I don't think I have a user problem. So I am thinking that I have a nonexistant service that I need to get rid of.
My question is, should I export the registry key and delete it from the registry or should I backup the registry and then delete this service key? Or do you guys think it's something else?I know that hardware problems can cause this so I checked the device manager for problems and I re-installed all the drivers for the hardware. I have four fans running in the case and the temp never gets over 48 degrees centigrade. The front case fan was noisy for a long time so I removed it and cleaned it and the noise stopped and this has been going on for a lot longer than the lockups.
I tried a google search for CoachWdm and came up empty.
I looked on my other computer running the same OS and that service was not in the registry or the local services folder. I have the non OEM XP install disc so I can re-install XP but I think if I can get that service to quit trying to start it may fix my problem. I can wait until I get some opinions before I do anything, I mean the computer works fine except for that. TIA

Ok, first things first, the CoachWdm service is related to Samsung camera/printer/scanner or some other Samsung related device. If you have something like this on your computer, uninstall it. Otherwise, the registry edit route is the way to go - manually delete the service from teh HKLM services sub-key.

As for lockups, random lockup when you walk AWAY from the computer is typically related to power management system - that is to say, your computer is going into hibernate mode or standby on you. Check your settings in the Control Panel by double-clicking the Power icon. Set the computer to "Always on" using the dropdown menu. If it is already set here, then your lockup, in my opinion, is likely due to RAM incompatibility (most common) or driver/software conflict.

Really to truly define what the lockup is, we need to determine the type of lockup you're dealing with. There are two types:

Software lockup: When two pieces of software (drivers, programs, etc) are fighting with each other and causing conflict

Hardware lockup: When two pieces of hardware are causing lockups because of incompatibility

The latter of the two is hard to torubleshoot.

To define which it is, next time the computer locks up, press the CAPS LOCK key on your keyboard - if the LED for CAPS LOCK lights up on the keyboard, your problem is software related.

Let me know which it is and I'll try to help further. Meanwhile, see if there are any event log errors around the time of the lockup - this will help determine whether something specific is logging an error before crash/freeze. you may get lucky and find something.

Hi Shifty:
Believe it or not the damn thing didn't lock up the whole day and then at 11:30 I got up to go let the dogs out and when I came back it was locked up.
I checked the event viewer and there it was right at 11:34 with the same error message. I thought originally it might be in the power management system too until I saw the event log. I don't have anything Samsung on the computer. I have a Kodak digital camera that windows installed and I have an Epson printer/scanner.
I stumbled into the MMC and found a cure for systom stops responding after an event log file. It says to go into the registry and edit the key
HKEY LOCAL MACHINE_ SYSTEM_CURRENT CONTROL SET_LSA and edit the crash on audit fail by deleting and restoring the value and changing the value from zero to 1. I am not sure exactly how to type the key back in after i delete it if I go with that. I'm inclined to delete the service first and see if that resolves the issue.
BTW I have hit every key on the keyboard after a lockup and nothing happened but if it locks again I will hit the Caps lock key just in case I missed it.
Thanks for replying. VV

Hey Shifty you hit it on the head when you said that the CoachWdm service was a samsung related device. I got to thinking that I use to have this old POS Mustek digital camera and I kept seeing Mustek show up in the event logs so I edited it from the registry. Well I just looked at the camera and it says resolution by Coach technology. I figure that the service got left behind and it couldn't find the file it needed to start. Well I zapped it so I'll see if all goes well. If I had seen that it was related to a digital camera I'd have known what it was so you've helped me a bunch. VV

No problem. If you happen to see the lockup is still happening, look for that service again in the registry - also, did you want some clarification about how to backup a key of the registry, then delete, then how to re-import that registry setting?

I went ahead and deleted the key and so far it hasn't locked up. I'm keeping my fingers crossed. I'm ok with Export import and deleting the keys. I was a little unsure on typing backing back in a new key with a new value. I don't think I'm going to need to do that now though. Thanks again.VV

I wouldn't type the key in - just double-click the file you exported registry entry to and it will prompt you on whether or not you want to return that key into the registry. Apologies if you already knew this.