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We are having some major problems with several of our computers.
Two different models running Windows 7: HP dc5100 and HP dx2250
They turn on, reach the "Starting Windows" splash screen, go blank and immediately restart in an endless loop.
I have tried Safe Mode with no luck. It stops at "CLASSPNP.SYS" and then restarts once again into the endless loop.
I have also tried a startup repair with the Windows 7 DVD. It is unable to do a startup repair and comes up with this error message:
Problem Event Name: StartupRepairOffline
Problem Signature 01: 6.1.7600.16385
Problem Signature 02: 6.1.7600.16385
Problem Signature 03: Unknown
Problem Signature 04: 21201148
Problem Signature 05: External Media
Problem Signature 06: 5
Problem Signature 07: 0x6b
OS Version: 6.1.7600.2.0.0.256.1
Locale: 1033
I have also seen a BSOD come up at random times right after the Windows splash screen that says "PROCESS1_INITIALIZATION_FAILED 0x0000006B (0x0, 0x0, 0x0, 0x0)." That's if i can read it fast enough before it reboots!
If ANYONE has some suggestions, please let me know! We have several computers at various locations all having the same problem! The last thing I want to do is reload all of these computers after meticulously backing up files from the hard drives!
ALSO: All of these were done with a clean install. No upgrades. Windows 7 was installed on here over a month ago with no problems until today. No additional hardware installed.
-Benjamin Dudley
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Hi.
This is a workaround that works for us:
the file is 384 bytes when broken , is 2,344,056 when OK. is beeing recreated when booting.
I can`t say this is 100%, but for us with the same hardware it seems to work find.
We have not been able to find out the roor course.
/K
Hi, We have15 Lenovo x201s that have the issue and the fix works. I have documented it, you can pretty it up if you would like.
We also Have SEP ver 11.0...
Tim
Boot machine and once you see the logo press F12 to enter the boot menu.
Within boot menu toggle down to USB(setup with Win7 media set to bootable) and or location of Windows 7 media DVD
Install windows window opens accept defaults and press Next
In this window on the lower left side click Repair your computer
System Recovery options window opens and a 2<sup>nd</sup> window that is searching for problem
Once the search finishes you have an option of Repair and restart or No Click No
In System Recovery Options Window click Next
2 Startup Repair Windows opens in 2<sup>nd</sup> Startup Repair Window click cancel
Attempting Repairs runs When Complete click cancel a System Recovery Options window opens
Click on Command Prompt
You will see X:\Sources>
Type C: and click enter
Type cd \Windows\system32\CodeIntegrity then click Enter
Type Del boot bootcat.cache then click Enter
Type CD \ and click Enter
You should now be at C:
Type Exit then click Enter
Click restart
Logon to Windows as administrator
Copy the file from a known good machine c:\windows\system32\catroot{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\ to broken pc and replace
Reboot
I am having the same problem on a couple machines. Maybe a dumb question, but how are you getting in to delete/rename that file? I have a lenovo laptop with windows 7, and I cant get to a place where i can delete that file. BTW, I also have SEP.
I remove the drive and connect them to my laptop via USB/SATA adaptor. They're Dells so it's just two screws and it slides out.
ok i have the same issue but one thing, mine wont rebuild the bootcat.cache file for some reason,
i also dont have both catroot files i only have catroot2
i also didnt even have to delete the bootcat file because it just seemed to disappear on its own
i have been trying the stuff you guys have said here but to no avail, any suggestions?
and i also dont have SEP either
I am having the same problem on a couple machines. Maybe a dumb question, but how are you getting in to delete/rename that file? I have a lenovo laptop with windows 7, and I cant get to a place where i can delete that file. BTW, I also have SEP.
You have to do it offline either boot into WinPE or remove the hard disk and mount on another live system.
