"power on reset or bus device reset occured - Unit attention
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"power on reset or bus device reset occured - Unit attention

 
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Rattus the RAT
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Posted: Thu Jan 13, 2005 8:21 am    Post subject: "power on reset or bus device reset occured - Unit attention Reply with quote

Monster DVD burning problem here, here's a summary:

P4, 2.4GHz, 512 RAM. 2 HD, 2 CD drives (CDRW, DVDRW). The DVDRW was a brand
new sony and was in slave, CDRW in masters, couldn't burn DVDs, would always
fail half way through, using both clone DVD or Nero. After wasting many
discs and hours, I concluded my DVD burner was bad, bought a new Plextor
PX-716A, I replaced the Sony with that, changed the IDE cable, updated
windows, ran AD Aware, installed the Roxio software included, tried to burn
an image, everything seemed fine then at 51% it failed again:
"power on reset or bus device reset occured - Unit attention"

What does that mean!
If that can help, I dont know, I observed something weird while processing
huge video files ealier (made the computer really busy), after a while the
computer told me that I unplugged some devices incorrectly (kind of like
when you remove a USB flash drive by just unplugging it). But those devices
were both CD and DVD drive! They disappeared, no idea what that means, they
reappeared after a reboot.

hope you can help me. thanks

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Dr Hfuhruhurr
Guest





Posted: Thu Jan 13, 2005 3:58 pm    Post subject: Re: "power on reset or bus device reset occured - Unit atten Reply with quote

Try burning a disk with the CDRW drive disconnected. (and set the DVDRW
to Master). If that works then set the CDRW to slave and re-add and try
burning another DVD.

Doc
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Andreas
Guest





Posted: Thu Jan 13, 2005 4:10 pm    Post subject: Re: "power on reset or bus device reset occured - Unit atten Reply with quote

on 1/12/2005 21:13:33 (PST) Rattus the RAT wrote

Quote:
"power on reset or bus device reset occured - Unit attention"

usually it indicates some problem on the ide bus. my suggestions to fix
it:

1) open the device manager (control panel ->system ->hardware), find
the primary & seconday ide channels, set the transfer mode to "DMA if
available".

2) update the bios of your mainboard.

3) update the chipset of your mainboard.

4) finally, update the firmare of your dvd drive.

restart after every step and see if the prob is still there.

for steps 2) to 4): be *very* careful and follow the directions for the
updates to the letter. if something goes wrong during the update it is
likely that you can trash your mainboard/dvd.

good luck!

--
Andreas
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b1ggsy



Joined: 25 Jan 2007
Posts: 1

Posted: Thu Jan 25, 2007 2:10 am    Post subject: Reply with quote

Hi I recently had this same error! I searched the web and found this and some other forums where people see to have experienced this and in every place I read it seemed a different solution was suggested, tried and in some cases they worked. However after reading up as much as I can I wasn’t happy and decided to search through my own PC.

I looked in device manager and all seemed fine there! So I checked various other places and eventually decided to check in msconfig (to locate this go to start – bottom left of screen - left click then left click on run and in the box that opens type msconfig).

When msconfig opens go to the Startup tab and see what you have there and what is ticked. I personally had quite a few – some of which were obvious i.e. my modem etc – but there were some I had no idea what they were. I decided to Google each entry individually and see if they were needed by my pc to run things. Here is a list of what I found and the advice I found.

NeroCheck - unneeded - Disable
ALCMTR - Needed - Enable
RTHDCPL - Needed - Enable
HDAShCut - Needed - Enable
NvMcTray - Neutral - Disabled
Nwiz - Unneeded - Disable
NvCpl - Dangerous - Disable & Remove
CliStart - Unneeded - Disable
PSDrvCheck - Unneeded - Disable
Dumprep 0 –k - Unneeded - Disable
NBJ - Needed - Enable

After acting on this and disabling all the ones it said were unneeded or dangerous I rebooted my machine and the problem was gone and I could carry on recording. If you get this problem check your msconfig and see if you have any of the above running or any unneeded dll files running, if so disable them and try again. If you sort your problems this way please let me know which ones you disabled, and we maybe able to work out.exactly which caused it. Hope this helps others with the same problems. Biggsy.
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