BSOD - two to three times a day

Hi !

I have a Sony Vaio E seires VPCEA16FG purchased in 2010 with below mentioned specifications:

Intel Core i5-520 M Processor 2.40GHz with TurboBoost 2.93 GHz
Windows 7 Home Premium 64Bit (original from Sony)
500 GB Hard disk - hitachi HTSS545050B9SA00
ATI Mobility Radeon HD5650
4 GB RAM

For the past one year i have observed that the computer restarts automatically 2-3 times a day. Sometimes, the BSOD appears, at times it just restarts - with the error - unexpected shutdown -before windows loads.
But,mostly the screen goes blank with a shrill beep which can only be stopped after pressing the power button. This happens when the system becomes really hot and the fan starts working over-time. This Sony model is known to have heating issues.

I use a lot of Graphic heavy software for my work such as Photoshop, AutoCAD etc. The fan working overtime usually happens when the system is using a lot of RAM. And the sound of the fan whirring, is usually one of the first indications that my system is about to switch off without indication. When it restarts, I get an indication from CCleaner that I have atleast 500MB data which requires cleaning.
The unexpected shutdown also happens in the middle of playing Videos , be it on VLC Player or online streaming.

I have tried the following:
1. Restoring the computer to a previous date. This gives a short-term relief only. After two-three days , its again back to the same routine.
2. Re-installed Windows, but the problem remains
3. Using Control Panel - I have checked the RAM - They seem to be fine.
4. Replaced thermal paste a year ago. It did give temporary relief i.e. the computer did not over heat as quickly but it sure did restart once every 2 days.

The System Log file is attached for your ready reference.
I'd be grateful if you could offer any help/suggestions regarding this issue.

Thanks a ton!

Thanks. So , is there a way a software/tool with which i can try and diagnose if this is the issue?

Your Bios also appears to be out of date.

Did you say Fan problem


Roy

Hi

Thanks for your input.
Is it safe to update the BIOS, considering I am not very tech savvy .

MSClin said:

I did a quick review on your crash dump, and I suspect you have faulty USB driver, but I am not sure, as I did a quick read. Someone from the forums confirm, please.

It would be most helpful, if you could also send a link for the solution.
Thanks again!