I found this. Maybe worth a go?
1. Open this link in a new tab of your web browser: Download Marvell TOPDOG 802.11n/g/b Wireless Driver 1.0.0.4 Driver for Windows Vista - Softpedia
2. Download the driver package to your 'desktop' or 'software' folder of your choice.
3. Double-click on the install file to install the driver package. (***IF WINDOWS TELLS YOU THE DRIVERS DON'T HAVE SIGNATURES AND ASKS IF YOU REALLY WANT TO INSTALL THEM, TELL THE OS 'YES'!)
4. After install, please reboot your laptop.
5. Navigate down into the Netgear folder in the Programs folder on the root of hard drive and you should be able to find a file in there called 'NetMW14x.inf'. Right click on this file and choose 'Install'.
6. Now go into the 'Device Manager' and double-click on the '?' adapter with the yellow question mark showing the hardware you've been pulling your hair out over. Choose to update the driver and take total control by demanding to choose the driver yourself Choose 'NetGear' for the maufacturer and 'WNT311 Wireless PCI adapter' as the device. Once again, XP will ask if it's OK to install the driver because it doesn't have a signature; tell Windows 'yes'.
Operating System Windows 7 All varieties (64Bit) Now Windows 8
Computer Type Self built
CPU Type and Speed AMD X4 2.8 Ghz
Motherboard Chipset Gigabyte MA74GMT
System Memory Type 4096 MB DDR-3 1333 Mhz
Video Card Type and Speed Radeon HD 5450 1024 MB PCI-E
Hard Drive 320 GB SATA
Anti-virus Software MSE
Computer Skill Level Self-Taught Expert
Favorite Game Pool/snooker Online.