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Windows 7: Computer doesnt start. BSOD after loading classpnp.sys

12 Jan 2016   #1
realflow100

Windows 7 Ultimate x64
 
 
Computer doesnt start. BSOD after loading classpnp.sys

No boot log file is created so i cant see whats crashing it
And the error code is generic and has no readable words in it but is very specific

stop 0x0000007b (0xfffff880009a9928 0xffffffffc0000034 0x0000000000000000 0x0000000000000000)
And thats all it says

I recently encountered problems starting windows
so ive gotten a "tiny" bit further in the booting up screen where the dots are starting to swirl into the center
but then it crashes


My System SpecsSystem Spec
.
12 Jan 2016   #2
Pauly

Win7 Ultimate X64
 
 

An 0x7B bsod indicates an inaccessible boot device or generally an error relating to your HDD

I would start by making a bootable flash drive to run Seagate seatools on your HDDs to check their status and see what you find, if errors are present your primary concern will be recovering/backing up any data that you don't already have backed up elsewhere
My System SpecsSystem Spec
13 Jan 2016   #3
realflow100

Windows 7 Ultimate x64
 
 

Hard Disk Sentinel says my drive has 0% health and 0 days remaining life
but the error count is NOT increasing and hasn't changed status for 2-3 days
And No other attribute has problems at all.. Only the reallocated sector count.
How do I suppress the error notification? (Nevermind the windows popup gave me the option "Don't Remind me")

If the reallocated sector count is not increasing is it fine for now? No data is corrupted and I successfully reinstalled windows (after deleting everything and backing up data)
its a 500GB Seagate drive
its not making any weird noises. sounds completely normal

The option of replacing the drive is zero for me because I dont have money and im 18 and dont have a job and my other 250GB drive is too full to store about 117GB of personal data that I have saved on my OS drive
My System SpecsSystem Spec
.

13 Jan 2016   #4
Pauly

Win7 Ultimate X64
 
 

Regardless of the status of your disk your system will not boot with it so I see little option but to replace it.
Reallocated sector count is important, when checking your disk this is telling you areas of the disk are unreadable and have been written out, although its not uncommon to have some - too many or an increasing number is a sign of a bad drive.
When checking these values be sure to look at RAW values for an exact number but as I said before this is all pie in the sky if your machine will not boot with that disk
My System SpecsSystem Spec
13 Jan 2016   #5
realflow100

Windows 7 Ultimate x64
 
 

I'm messaging from that drive right now running windows 7 ultimate 64-bit fresh install
Its booting fine now
All I did was save my data and reinstall windows
Working fine now besides the irritating S.M.A.R.T. Error

The count of reallocated sectors has not changed since when they first appeared

check disk reports no file corruption (attempting to scan for and repair bad sectors is a success finding no errors when running windows from my 250GB drive (the one without the smart errors)
My System SpecsSystem Spec
13 Jan 2016   #6
Pauly

Win7 Ultimate X64
 
 

OK that's good news I thought the machine was refusing to work with the drive

I see no problem using the disk then as long as smart values are not changing but be aware this could be a sign of impending failure so keep any data you don't want to lose backed up and if you have enough space create a system image of your machine and then if/when the drive does fail you have a backup to clone to a new drive and you will be backup and running in no time

and remember when monitoring smart data always check RAW values and not the generic ones as these are often not representative of actual events
My System SpecsSystem Spec
13 Jan 2016   #7
realflow100

Windows 7 Ultimate x64
 
 

The raw values are never changing for any of the values besides the normal ones like start/stop cycle and hours run and such.

I can't do a backup image because I dont have enough storage space to store about 117GB of personal files. My 250GB drive is over half full and split into two partitions so if my 500GB hard drive dies(its newer than the 250GB one) i'm going to send the computer in and tell them the hard drive failed and get a brand new computer instead. (if possible ill TRY to backup anything that i can) but i can only backup my personal pictures videos and music. because the programs are not as much of a concern (large games like GTA 5 and such)
My System SpecsSystem Spec
20 Jan 2016   #8
realflow100

Windows 7 Ultimate x64
 
 

Update:
Its been a week or so and still running fine. reallocated sector count still hasn't budged. no file corruption has been identified so far either. check disk still reports no errors. windows 7 still running fine.
(even scan for and attempt recovery of bad sectors hasn't found anything out of the ordinary)

Its to note the problem only appeared while i was sleeping in my bed. and left the computer on to defrag overnight. The message did not appear any time at all before that
When I got up the message appeared sometime during or after the defrag had finished
"hard drive error backup immediately"

No idea how it could of happened during my sleep since the computer hadn't budged the whole time. so i'm a little confused there.
My System SpecsSystem Spec
17 Feb 2016   #9
realflow100

Windows 7 Ultimate x64
 
 

About a month or so later and still working fine and dandy. should I still be worried though?
My System SpecsSystem Spec
17 Feb 2016   #10
Pauly

Win7 Ultimate X64
 
 

Personally I would have already replaced it but I think as long as you keep your data backed up and try to keep a current system image (both of which are good practice anyway) you have nothing to lose in the event of failure
My System SpecsSystem Spec
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 Computer doesnt start. BSOD after loading classpnp.sys




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