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Startup problems after Mobo upgrade


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#1 Comdrvimes

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Posted 07 May 2017 - 03:20 PM

I've recently upgraded my old PC to a largely new one with an ASUS Z270-K mobo and an i3 processor.  The old spec was a Core 2 Quad 9550 on an Asus P5N-D, running Win 7 which was fully updated.

 

The plan was to replace pretty much everything apart from the disks ( 1x 64 MB SSD 'system' disc and a 1TB disc for programs / data) and graphics card as I really didn't want the hassle of a clean install. The problem is the new system hangs and restarts at Windows start-up and in safe mode gets as far as loading classpnp.sys and then restarts. There's no BSOD in either case, just a restart.

 

Using a spare HDD I did a clean install and the new system is fine - so there don't seem to be any hardware issues. Equally the old rig still boots fine with the original SSD drive so the drive is OK and there's no file corruption.

 

I'm guessing this is a driver problem of some sort - either one's missing that it needs or one of the old ones isn't playing nicely with the new hardware. But as I can't get into windows I can't try to sort it. Start-up Repair cannot fix the problem and the log shows all error codes 0x0 until at the end it says:

 

Root cause found:
---------------------------
A recent driver installation or upgrade may be preventing the system from starting.

Repair action: System files integrity check and repair
Result: Failed. Error code =  0x490
Time taken = 224376 ms

 

 

Any ideas on how I can get around this?  I know I can do a clean install but I'd prefer not to loose the best part of a day this will take. NB That System Recovery will allow me to get to command prompt if that will help.



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#2 usasma

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Posted 09 May 2017 - 06:12 AM

NOTE:  Try a clean boot to see if the problem clears up that way:  http://www.thewindowsclub.com/what-is-clean-boot-state-in-windows
If it does, then different troubleshooting steps are called for.

Here's some repair/recovery/restore options (in this order).   Be sure to backup your stuff if you don't want to take the chance of losing it.:

1 - Startup Repair.  Run it 3 times, rebooting in between tries.

2 - System Restore to a point before this started happening.

3 - DISM/SFC repair (DISM doesn't work with W7, although SFC does)  - doesn't work if you're not able to boot to Windows (let me know and I'll post a way to do it from Startup Repair)
    

Then please run the following DISM commands to see if there's any problems with the system (from an elevated (Run as administrator) Command Prompt).  Press Enter after typing it:
   
Dism /Online /Cleanup-Image /RestoreHealth

    FYI - I have repaired systems using the last command even though problems weren't found with the first 2 - so I suggest running them all.

    From this article: http://technet.microsoft.com/en-us/library/hh824869.aspx

    You can also run sfc.exe /scannow from an elevated (Run as administrator) Command Prompt to check for further corruption. Include the CBS log (located at C:\Windows\Logs\CBS\CBS.log) if you'd like to have a Windows Update expert check it (I don't check them because I can't read them)


4 - RESET using the "Keep My Files" option (W8 calls this a REFRESH; W7 and earlier doesn't have this function)

5 - Repair install of the OS (Thanks to FreeBooter!):
   

"How To Perform a Repair Installation For Windows 8, 8.1 and 10"
    https://www.winhelp.us/non-destructive-reinstall-of-windows-8-and-8-1.html

    "How to Do a Repair Install to Fix Windows 7"
    http://www.sevenforums.com/tutorials/3413-repair-install.html

    "How To Perform a Repair Installation For Vista"
    http://www.vistax64.com/tutorials/88236-repair-install-vista.html

    "Non-destructive reinstall of Windows XP"
    https://www.winhelp.us/non-destructive-reinstall-of-windows-xp.html


6 - RESET using the "Remove Everything" option (W8 calls this a RESET; W7 and earlier doesn't have this function)

If using W7 or earlier, this can be accomplished by resetting the system by use of the recovery partition/recovery disks/recovery drive.
If you don't have them, you can usually order them from the OEM manufacturer of your system ( US points of contact here:  http://www.carrona.org/recdisc.html )

7 - Wipe and reinstall from the Recovery Partition (if so equipped)

8 - Wipe and reinstall from Recovery Media - to include deleting all partitions.
If you don't have them, you can usually order them from the OEM manufacturer of your system ( US points of contact here:  http://www.carrona.org/recdisc.html )

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