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Windows 7: Verification of knownDll failed??

21 May 2011   #1

Windows 7 Home Premium 64bit
Verification of knownDll failed??

By accident, I was being dumb and stupid and was messing with the .dll files a while back and so it messed up my computer but I got it working again however whenever I load the recovery partition at the beginning of the start-up, I get the Fatal System error Verification of knownDll failed. Can anyone help? I have the provided info below also. I have only a small amount of knowledge with fixing computers so if you can, please put it as simple as possible on how to fix this.

x86 (32-bit) or x64 ? x64
- the original installed OS on the system? yes
- an OEM or full retail version? OEM
- What is the age of system (hardware)? 1 month
- What is the age of OS installation (have you re-installed the OS?) 1 month

My System SpecsSystem Spec

22 May 2011   #2
Microsoft MVP


What are you trying to do with the system - restore the system to it's factory state?
If so, and you're getting the dll error when doing that - I'd have to suspect a problem with your recovery partition.

Have you run a hard drive diagnostic? If not, here's some tests that you may want to run:
I suggest starting all troubleshooting with the following diagnostic tests. They'll save you a lot of time and heartache if there is a hardware failure, and you'll have the disks on hand in case you need them in the future:
H/W Diagnostics:
Please start by running these bootable hardware diagnostics:
Memory Diagnostics (read the details at the link)
HD Diagnostic (read the details at the link)

Also, please run one of these free, independent online malware scans to ensure that your current protection hasn't been compromised: Free Online AntiMalware Scanners (read the details at the link)
If these tests pass and the recovery partition still spits out dll errors, I'd suggest contacting the system manufacturer for a set of recovery disks.
My System SpecsSystem Spec

 Verification of knownDll failed??

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