Not sure where to post this but have to tell someone as it's given me grief for a month and there's not useful info onthe net associated with this issue.
This is a post to help others like me that have a Huawei E800 or E800A that worked in their old computer, but when trying to use it in their new computer the modem was dead (no light or a solid green light). Any a year has probably passed so you phone provider couldn't care any less.
This issue of the modem failing to initialise does not appear to be a fault with the expresscard slot, or the OS but it's actually the Huawei modem's firmware.
I discovered this because after a month of chasing my tail with vodafone, (250AUD for a new modem sir, oh, and you need to buy a USB one now as we no longer stock them.) and giving the computer manufacturer support line the sh!ts (even has a serive technician round, who agreed with my initial diagnosis that it was the new PC that was at fault, and replaced my laptop with another one...which didn't work with the modem!) I decided to take the plunge and try upgrading the firmware on the modem.
The Huawei forum is a complete waste of time too. Fancy shmansy but the forum is impossible to use and the moderators are not helpful. Not a wise move by the product manufacturer! Consumers don't forget problems like this in a hurry Huawei!
The firmware upgrade is not for the faint hearted as one false move and your modem becomes an ornament.
Firstly, you need to find another PC (preferably running XP) where the modem initialises (ie flashing green light before a flashing blue light).
Then you need to go to some small greek phone provider for the latest firmware (newer than advertised on the Vodafone.co.nz website but don't let this worry you): -
Download the relevant zip, and save the unzipped file on the old pc.
Close the mobile connect software (then use task manager to shut down the VMC program!) and run the exe file. Close all other programs and STOP SCREENSAVERS/STANDBY etc! Keep the modem in the express slot at all times!
The firmware upgrade (made by Huawei) is well instructed, and will take about ten minutes. You will see the green light flashing furiously, then when complete, you should reboot the PC. The modem will still work in your old PC, but now WILL also work in the other computers, even initialising before the OS has booted! Nice one Wind! Oi Vodafone, why don't you follow their good example and provide better suport for your Vodafone products ...wasting my bloody time...