Razer Lachesis = Computer Wont POST

MotherMayI · 25 Apr 2012 at 18:18

So, I hadn't used my computer for ~9 months as I am in a different country. Upon receiving the computer from the courier I set it up and it wouldnt POST.

I have narrowed this down, after hours of trial and error, to my new Razer Lachesis mouse that I have been using with my laptop in the meantime and have never used on the PC.

With the mouse plugged in the computer hangs on 'Checking memory..' part of POST every single time. Without the mouse, computer boots up entirely fine.

How is this possible? :confused:

I have flashed BIOS (IP35-E motherboard) to the latest (18), no joy. Fresh out of ideas now. Any pointers on how to fix it would be much appreciated.

MotherMayI · 25 Apr 2012 at 18:46

Even more than that, if I boot the computer up and plug in the mouse further down the boot process it instantly hangs wherever it is.

T345 · 25 Apr 2012 at 18:48

If you can get a cheap PS2 mouse + keyboard to prevent driver issues, and re install the razer drivers
Thanks
Bakht

beejjacobs · 25 Apr 2012 at 18:50

I assume the mouse worked fine in the laptop?

Also, its obvious I know but have you tried different USB ports?

Rids · 25 Apr 2012 at 18:51

Hmm, go into the BIOS and see if support for Legacy USB devices is enabled? If it isnt, try it, if it is, turn it off.

I used to have the same issue with my Drobo.

MotherMayI · 25 Apr 2012 at 19:21

Rids said:
Hmm, go into the BIOS and see if support for Legacy USB devices is enabled? If it isnt, try it, if it is, turn it off.

I used to have the same issue with my Drobo.

Thought you might be on to something there, but no joy.

Mouse works fine on the laptop.

Going to try and install the drivers via keyboard now and see if that makes any different.

MotherMayI · 25 Apr 2012 at 19:45

Installed drivers - Computer boots fine without mouse plugged in, functions fine if i plug the mouse in while in Windows :uhoh:

Toggling between Legacy/OS support for USB in the BIOS does nothing to affect it.

Woden · 25 Apr 2012 at 19:54

That mouse has onboard memory. Make sure booting from USB is not in your boot order before hard disk.

bledd · 26 Apr 2012 at 09:51

Check the boot order, also see if there's a firmware update for the mouse

mothermachine · 26 Apr 2012 at 10:38

Same issue with the Steelseries XAI mouse... they have suggested I send it back for RMA but I've not had any assurance that their new models will fix the problem. It's almost definitely something to do with the onboard memory as Woden said, and the BIOS is getting confused, thinking it's an HDD or something. My XAI occasionally stops my PC from booting at all and can kill all the other USB ports in the machine while attached.

Amazing that probably the most basic part of a PC, the mouse, can cause such massive issues.....

Hope you get it sorted.