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Windows 7: Razer Lachesis mouse

15 Nov 2010   #41


No probs Ciara

chlywly, have you tried resetting the mouse to factory defaults?

Hold the profile button down for 10 secs

My System SpecsSystem Spec
15 Nov 2010   #42


Also have yo tried manually updating the driver through device manger to point it towards the Lachesis driver?
My System SpecsSystem Spec
15 Nov 2010   #43

Windows 7 x64

I just adjusted the Win7 policy settings to not install drivers automatically, when I plugged it into a different USB port, it finally failed (and in device manager has the Razor device name) but when I manually try to install drivers it says it was unable to... :0 Still no luck.

P.S: The mouse is at factory defaults. I just bought it today :/

When I enable windows to automatically install drivers it seems to just install the regular windows composite device driver for it.. Anyway, this is pointless. I give up.

Appreciate it.
My System SpecsSystem Spec

16 Dec 2010   #44

windows 7

Hi i have same mouse with win7x64.If you returned it good job.Driver thing is a pain in the ass AND its a 60euro mouse!Of course i had problems too.If anything went wrong with returning it, i found out that the usb settings in BIOS greatly affects the driver behaviour.If there wasn't these drivers problem this mouse would worth the 60e.But concidering i waste some hours and still the drivers wont work 100% flawless(although its working just fine right now with very minor driver problems and maybe its just me cause i have and a second mouse) its not worth the 60e.
My System SpecsSystem Spec
20 Apr 2011   #45

Windows 7 Ultimate x64
key combo, Lachesis, causes sticking

Hey, my fellow Lachesis users. I have the 4000 dpi version, 2 actually. If I program one of the side keys to any single key I have a problem. Do you?? I use the front right side key for melee. Try ths. Program any side key to some single key. Then open word or notepad. get the curser ready to type. Press and hold the left mouse button and as your holding it press and release the side key - the let go of the left mouse button. It's a problem for me because while gaming if I am firing a weapon while being rushed I sometimes melee befor letting up on fire. Anyway, 3 of 3 Lachesis mouse I have tried this on are the same. Hold left mouse while press and release side key programed as any single key, then release left mouse and that programed key is acting like it's depressed until you press any of the side keys again. True????

Is that normal. Can I set it up so it does not work that way?? I tried doing a macro but that way the macro won't interupt the fire/left mouse.

Uploaded with

there is my Lachesis config. I tested it again and found that the programed button remains like it's being depresses until you press any of the other PROGRAMED SIDE buttons. The 2 behind the wheel will not un-stick the programed key and for a side key to un-stick it, it can't be off.
My System SpecsSystem Spec

 Razer Lachesis mouse

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