CLASSPNP.SYS Stop error

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Marth8880
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CLASSPNP.SYS Stop error

Post by Marth8880 »

Uh oh! :runaway:

Hey guys, so I upgraded my motherboard, CPU, RAM, GPU, and PSU last night, and I've unsurprisingly run into a pretty big problem. My computer boots, POSTs, gets to the bootloader, but not long after Windows 7 begins to load, I get a Stop error (BSoD).

After checking the boot log, the Stop error appears to happen after a driver called CLASSPNP.SYS is loaded, which, according to Google, is the driver for SCSI, which I don't even utilize lol.

I've tried a few things:
- Configuring the SATA drives as AHCI instead of IDE,
- Limiting my processor cores to 1, and
- Booting into all of the Safe Mode options,
but to no avail.

I still have a few tricks up my sleeve, such as clearing the CMOS, attempting a Windows Startup Repair, and removing my graphics card, but I wanted to know what you guys think about this.

My very last resort is to reinstall Windows.

Help me, Obi-Wan Kenobi, you're my only (h/n/p)ope.


Hardware:
-ASUS P8B75-V LGA 1155 Intel B75 ATX Motherboard
-Intel Core i5 3470S Ivy Bridge 2.9GHz LGA 1155 Processor
-ASUS GeForce GTX550 Ti GDDR5 192-bit 1GB
-G.SKILL Extreme Performance 8GB (4x2GB) DDR3-1333MHz Quad-Channel Memory
-Rosewill CAPSTONE-550 550W 80 GOLD PLUS Power Supply
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Teancum
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Re: CLASSPNP.SYS Stop error

Post by Teancum »

Get the hex code for the stop error. Those are often more useful.
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Marth8880
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Re: CLASSPNP.SYS Stop error

Post by Marth8880 »

0x0000007B (0xFFFFF990009A9928, 0xFFFFFFFFC0000034, 0x0000000000000000, 0x0000000000000000)
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Loopy53
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Re: CLASSPNP.SYS Stop error

Post by Loopy53 »

I didn't have time to read the entire post, but hopefully THIS should help you out. Other than that try booting in RAID mode. What I got from some quick research I did is that the computer can't find the boot device. Hopefully it's not your HDD/SSD. Also, check your drivers (if you can) and make sure they're all good to go. A google search for your hex code should also turn up some more stuff. Good luck! :)
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Marth8880
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Re: CLASSPNP.SYS Stop error

Post by Marth8880 »

I wouldn't be able to get a Stop error if I couldn't get into the bootloader. ;)

I can't check my drivers; I can't get into Windows.
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THEWULFMAN
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Re: CLASSPNP.SYS Stop error

Post by THEWULFMAN »

This explains a lot. :o
Hidden/Spoiler:
[21:24] [GT] Marth: Time to upgrade my computer. Will be back in over an hour probably.
[21:24] [GT] THEWULFMAN: Alright
One day later.

I'm sure you'll get it figured out soon.

The one time this smiley is quite appropriate. :cpu:
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Marth8880
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Re: CLASSPNP.SYS Stop error

Post by Marth8880 »

LOL^

Yeah, so instead of wasting days over trying to fix this problem normally, I just said "LOL NO" and performed a fresh install of Windows. All is well again. :)
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Loopy53
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Re: CLASSPNP.SYS Stop error

Post by Loopy53 »

Did you loose any data in the process or was this a clean HDD/SSD? Glad you got the problem fixed :)
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Marth8880
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Re: CLASSPNP.SYS Stop error

Post by Marth8880 »

Loopy53 wrote:Did you loose any data in the process
No.
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Teancum
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Re: CLASSPNP.SYS Stop error

Post by Teancum »

The 7B error is generally an "INACCESSIBLE BOOT DEVICE" error. I'd recommend following the solution (marked in green) in this thread, then getting back to us.

http://social.technet.microsoft.com/For ... 0cbaf9c7a/
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