Windows 7 Professional x64 on HP Probook 4720s with 4 GB memory - freezes intermittently, but only appears to do so when connected to wireless network (hard-wired network with wireless turned off - no problems). Also seems to be OK in safe mode with networking (at least it hasn't frozen yet). Here's what I've tried so far:
- complete scans with MBAM and Spybot - clean
- remove and re-install wireless connection through device manager (Ralink RT3090)
- download and install current driver from HP's site
- reset TCP/IP settings
No luck so far in isolating culprit. Advice appreciated.