Windows 7 - Randomly freezing whilst browsing with Firefox?

Windows was regularly freezing my system.
The issue could be solved by rebooting only

1) Windows 7 x64 and drivers: were and still are uptodate
2) SFC /scannow: reported no issues
3) Memtest86: reported no issuess
4) Emsisoft Internet Security/MBAM combo: no malware (even after an extra manual scan)
5) Eventviewer: did not report anything special (no errors or critical events)
In fact uptil 1-2 minutes before the freeze nothing was being logged
6) Repair Windows ? There was nothing to repair...
7) Startup programs: were cutdown to a minimum
8) Performance index: 5.9 (8GB RAM, Intel Core 2 Quad Q9550 Quad-Core 2.83GHz, temperatures of all components are fine)

There are many, many threads about this subject, i.e. Windows 7 freezing, but most of them are about which steps to be taken and usually threads end somewhere, without a solution.

Found out that in my case Windows was freezing whilst browsing with Firefox, along with using other applications.

Now I am not saying the below is final solution, however a -possible- solution may be to turn off GPU hardware acceleration.
Actually, over the last week, I had no freezes anymore...

See: How to Turn GPU "Hardware Acceleration" On or Off in Firefox
Firefox GPU Hardware Acceleration - Turn On or Off

So if you are using Firefox and Windows freezes whilst browsing, you may wish to give this at least a try...

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Thanks.

Sorry for the delay.

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All was okay, except for "1 unindexed file recovered" - drive c
Didn't do the other other drives though, assuming that the c-drive is the most important one.
No idea what this recovery file means and neither whether it cud lead to a windows freeze.

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