I recently reformatted my comp coz my system is getting unstable (frequent shutdown or restart). Im using an ecs pt800ce motherboard with pentium 2.8c HT ,1 G sdram (2x 513 mb apacer module). nvidia fx 5500 256 mb ,seagate 80 G sata drive,LG dvd writer, asus cd writer. Before i reformatted my comp i checked the seagate website for a possible defects in my hd and the website reported a bad sectors in my hd, i also ran memtest on my memory and the result is ok. I also checked the event viewer to see the error and it says that i have i/o errors and something about paging file. and another indicates an atapi error. thats the reason why i reformatted my comp. Actually i didn't reformat my drive but erase all the data using the seagate disk wizard started edition and zero fill my drive to erase the mbr for a possible virus infection , i did the quick option for zero fill tho. Then i start to install a fresh copy of windows. The installation went smoothly until i started installing drivers and softwares. My comp suddenly stops responding or sometimes it just shuts down or restart. I dont know what to do now. Can anyone help me?