Of late, my desktop has been having unexpected restarts. I have run a full system antivirus scan using a very good antivirus software. It did not detect any virus. Using the same software, I have confirmed that my PC doesn't have any malwares or rootkits. I have defragmented my drives twice i.e. once using the windows 7 defragmentor that is given along with the OS and once using the defragmentor of my antivirus program. But the problem has persisted. However, the frequency of unexpected restarts is low. Whenever the restart happens the computer asks if the booting has to be done in the normal mode or one of the safe modes. What could be the possible reason for this? I really want to sort this out as I am fussy about even the smallest problems in my PC.
OS: Windows 7 Professional (Service Pack 1)
Processor: Intel Core i3-2100 CPU @3.10GHz 3.10GHz
Installed memory (RAM): 4.00 GB (3.61 GB usable)
System type: 32-bit OS
I have a lot of faith in you guys. I appreciate any valuable help I receive.
Thanks in advance.