Sony Vaio VPCF13LOE Win7 pro x64 freezes randomly

After 2 weeks, on a daily basis, trying to solve the problem that i will describe here, i'm asking for your help to find a solution.




I have a Sony Vaio VPCF13LOE, with Windows 7 x64 professional instaled. Windows "freezes" randomly. Sometimes i work with my laptop all day long and nothing happens, sometimes it freezes each fifteen minutes or so.



I reinstalled win7 , recently, so the computer doesn't have much software to cause conflicts, but the drivers.






Mesures (unsuccessfull) already taken:



1. Hard Drive diagnostic test (ok result)



2. Ram diagnostic test (ok result)



3. In Safe Mode the computer performs normally, not freezing, so that tells me its not a hardware problem.



4. After instalation he froze. I rebooted the laptop and went to the device manager, and noticed 3 drivers for wireless.



- The driver for Atheros (i installed after i profiled the hardware);

- The native/generic driver of Win7 for for the wireless board.

- The Win7 driver for virtual wifi (dont know what that is.



Thinking in a driver conflict, i uninstalled the native/generic driver of Win7 for for the wireless board and the Win7 driver for virtual wifi. I rebooted the laptop and after 10 minutes it froze again. Before freezing i noticed that the native/generic driver of Win7 for for the wireless board was successfully uninstalled, but the Win7 driver for virtual wifi, was there again, this time with the #1 - like this: Win7 driver for virtual wifi #1. I rebooted the computer, unistalled the Win7 driver for virtual wifi #1, and rebooted again. I went back to the Device manager and saw Win7 driver for virtual wifi #2.


After a while the computer froze again.



5. Not being a hardware problem, i bought a new disk and new memory ram chips. Still Freezes.


6. It's not an overheating issue also.





Conclusion: It seems to me that there might be a incompatibility issue between some Win7 service and the laptop or a drivers conflict.

If it's a Win7 service thing, I cannot identify on the Event Log what service is creating the freezes. Is there some way to see what services are loaded in normal boot and what are loaded in Safe Mode?





I appretiate any suggestions, answers and solutions anyone might give.


Thanks in Advance

 

WRT. no. 6 in your list, what are you using to measure the temperatures? Overheating is the no. 1 cause of 'random' freezing that you are reporting. Run some utility (openhardwaremonitor is free and works great; has a nice graph too so you can see the variations depending on whatever you are doing at the time).

I just opened and cleaned my laptop's air passages, and cleaned and lubricated the fan shaft while I was about it, and changed the thermal paste. 20C drop in temperatures while watching x265/HEVC videos - down to 60+ from 80+ previously. It was so bad that launching Chrome while a video was running would cause the laptop to shut down as temperatures crossed 100. (Btw. I'm from India, so that explains the high temperatures - the ambient is around 35C.

So, if you haven't cleaned the airways in your laptop for a while, that's the way to go. Look for the guide for your model - it will be somewhere on this forum.

No. 2: graphics drivers.
No. 3: pointing device drivers. Windows Update gave me a new driver recently that seriously annoyed me.

 

After doing a fresh install, you should install all the sony drivers which you can get from here:
http://www.sony.co.uk/support/en/product/VPCF13L0E

Vaio's usually require the drivers to be installed in a certain order for everthing to work right. I looked around in the owners lounge and found this which is probably right. I'm not sure i would do the regedit stuff, but that would take further research. For graphics drivers, your going to want to use the official sony ones for your model for best compatibility.

http://forum.notebookreview.com/thr...rs-thread-part-5.521914/page-392#post-7274304