Crash in hibernate or sleep

Still points at your Broadcom wireless driver.

Go to Device Manager,
Expand the category with the Network Adapters
Right click on the Broadcom wireless adapter and select "Properties"
Select the Details tab, then select "Hardware ID" in the dropdown box
Copy down the first 4 characters after the VEN_ and the first 4 characters after the DEV_ and post them here. (this'll help us to identify which Broadcom chipset is involved and to see if there's a more recent version at the Broadcom website.

Nothing that I could find at the Broadcom website.

I don't know about this site, but they claim to have a 2008 version of the BCM 4315 driver:
bcm4315 driver (Broadcom) 7, Vista, XP, download

No guarantee's about compatibility, but install it using this procedure:

Compatibilty Mode Driver Installation:
1 - Download the latest driver from the manufacturer's website.
2 - Uninstall the current drivers using the Control Panel...Programs and features...Uninstall a program applet. Then verify that the driver/device has been removed in Device Manager
3 - Right click on freshly downloaded driver installation file and select "Properties"
4 - Select the Compatibility tab - and do the following:
- Click on the "Change settings for all users" button
- Click on the box to select "Run this program in compatibility mode for" and then select Windows Vista Service Pack 1
- Click on the box to select "Run as administrator"
- Click on OK to exit all the dialogs
5 - Right click on the driver installation file and select "Run as administrator"
6 - Let it install and see if that stops the BSOD's.