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Windows 7: Windows 7 BSOD on system start

08 Mar 2011   #1

Windows 7 Home Premium 64bit OEM
Windows 7 BSOD on system start

Hi all,
Recently I've been having BSOD whenever windows starts up and I sign into my user profile. This happens almost immediately after I sign in and happens without fail. Apparently it seems that Lachesis.sys is causing the problem, but I've already uninstalled the Razer Lachesis software and I still keep getting the BSOD.

I've taken a picture of the BSOD as my com is having some problems with uploading the .dmp file.

Any help or advice would be much appreciated.

My System SpecsSystem Spec
08 Mar 2011   #2

Win 7 Pro x64 SP1 OS X Snow Leopard 10.6.7

Run in Safe Mode with Networking
If it still BSOD in Safe Mode with Networking - run Startup Repair and then boot into Safe Mode with Networking again.

In Safe Mode with Networking - Upload the Dumps and the additional info.

System Specifications would be helpful.

Try another mouse other than Razer Mouse - Razer Mouse is having few problems with Win 7...

My System SpecsSystem Spec
09 Mar 2011   #3

Windows 7 Home Premium 64bit OEM

Added dump files, any help would be greatly appreciated.
Updated my system specs in my sig.

Thanks in advance!
My System SpecsSystem Spec

09 Mar 2011   #4

Windows 7 Home Premium 64bit OEM

Any help would be much appreciated!
My System SpecsSystem Spec
12 Mar 2011   #5
Microsoft MVP


The picture points to your Razer Lachesis Mouse driver - and these are known to cause BSOD's when they're not the most current version.

Uninstall the Razer software, then download and install the latest version from the Razer website: Razer Support

If this doesn't work, post back and I'll work the rest of the uploaded files...
My System SpecsSystem Spec

 Windows 7 BSOD on system start

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