Hello, I am using a desktop which I build a year ago using an i5 processor with 10 Gb of RAM. A week ago it starts to reboot often when I am doing some applications of msoffice or after I login it also rebbot. ! formatted my harddisk suspecting that it is an OS problem but no improvement happen. I check my RAM and also replaced the hardisk and verified that it is good, also the desktop still reboots. Please help or share if you experience the same problem.