Yah, from the past two crashdumps (both dated April 5), it's definitely the mouse drivers (Lachesis.sys reported for both), and it's performing the same exact thing. I can't tell without a kernel dump what's actually going on, but whatever it did, it looks like it's corrupted the crashdumps as well (lots of information is zeroed).
Are you installing the correct drivers for it? You are installing the Windows 7 64-bit drivers, yes? I've noticed as well researching this that many other people are experiencing awful compatibility issues with 64-bit version of Vista and their Lachesis, and I'm feeling that this incompatibility has transferred over to Windows 7 as well.
Further inspection has me eyeballing a particular driver that kept unloading itself, thrice in each crashdump, that being LVUSBS64.sys. I know from research it's related to a USB Logitech device, most likely a webcam or speakers, but not entirely sure on that. You should determine this based on your own personal PC setup. Whatever Logitech item you have, you may wanna go into Device Manager and right click the device then click "Disable". Restart the PC. Then install the Lachesis drivers and restart as usual. If it still crashes, just simply consider the Lachesis as being incompatible to Windows 7 environment. Otherwise, it may very well be the Logitech device doing something funky and the Lachesis drivers have been left with the bag.
Are you installing the correct drivers for it? You are installing the Windows 7 64-bit drivers, yes? I've noticed as well researching this that many other people are experiencing awful compatibility issues with 64-bit version of Vista and their Lachesis, and I'm feeling that this incompatibility has transferred over to Windows 7 as well.
Further inspection has me eyeballing a particular driver that kept unloading itself, thrice in each crashdump, that being LVUSBS64.sys. I know from research it's related to a USB Logitech device, most likely a webcam or speakers, but not entirely sure on that. You should determine this based on your own personal PC setup. Whatever Logitech item you have, you may wanna go into Device Manager and right click the device then click "Disable". Restart the PC. Then install the Lachesis drivers and restart as usual. If it still crashes, just simply consider the Lachesis as being incompatible to Windows 7 environment. Otherwise, it may very well be the Logitech device doing something funky and the Lachesis drivers have been left with the bag.