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System Freezes within 1-2 hours of start
My Dell Vostro 230 system is encountering a strange problem.
It freezes withing 1-2 hours after I start it everyday.
When it freezes the screen gone blank, only cursor shows.
I have already ran Dell Diagnostics Test without any errors.
Also checked Hdd with Seatools and Ram with memtest86 without any errors.
Also formatted and re-installed Win 7 Pro 64bit with latest updates without any luck.
The strange thing is that, after freeze I have to just hard reboot the system.
After that system will work flawlessly whole day !
Any help provided is valuable.