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I'm getting BSOD before log in. Classpnp.sys error!

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#1 yorocco7


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  • Local time:04:58 AM

Posted 25 January 2010 - 09:53 PM

I'm experiencing a strange problem with Win7. I think its called a classpnp.sys error. I have Vista & Win7 on my laptop. I recently put the Win7 Pro as I plan to migrate to that permanently. I got it loaded up & worked great for 2 days. Then I made a mirror image of my other partition, which has all my info on it. I went to boot up with Win7, it get to the stage where you just start about to see the 4 color icons moving then BAM BSOD for a fraction of a second!! It goes back the "chose your OS- Win7 or Vista". It asks to run the repairs program. I've done that several types, no luck. I've read that others have had this problem & it stems from a windows update. (Laptop updated after mirror image made).
-Has same problem in Safe Mode.
-Can not restore to last good boot.
-Tried to open in Vista & change the classpnp.sys file to classpnp.sys.bak.
-Tried XP version of classpnp.sys & classpnp.sys.bak, no luck.
-I really would not want to complete reinstall Win7 plus i want to know why this happened in case it happens again

If anyone can shed some light on this problem I would greatly appreciate it.
Thanks everyone!
Acer 5738Z - Pent.Dual Core T4200 2.0GHz - 4.00GB RAM - 64-Bit Vista Biz & Win7 Pro -Latest Moz.F.F. & T.B.- Avast!

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