Here i am once again with an infuriating problem i can't solve.
I have two huawei modems. A E270 from mtn that works with a mtn sim and teoretically should also work with my vodacom sim but doesn't.
A vodafone huawei modem (not sure of the model, its the one where you could stick a micro sd card in, i'll confirm the model) that doesn't work on my pc but it does work on my laptop.

Now i've contacted vodacom numerous times and they are confident that the sim is ok and the modem is also working properly and that the fault lies with my brand new desktop pc. I've formatted and reinstalled all the drivers but no go.
According to vodacom it can't be the sim because it worked on my laptop, but why not on my other mtn modem?

Have anyone experienced a similar issue with the vodafone modem and how can i fix this?