My old 450w psu burned with a little explode and bought a new 400w psu,(it is said 400w but there is only 325w) and first 2 days it worked like a charm and I worked continuously more than 4 hours, and in the third day, it started, my computer freezes randomly, sometimes in the bios and in the grub boot menu (i use more than 1 os, ubuntu 10.10, 12.04, kubuntu 12.04, winXP, win7) and it stays still (not evading blank or shut down). I checked my bios, and found out that 3.3v is low and now it shows 2.96v. I checked this psu on another PC and the result was same. sometimes this pc works like there is no problem at all but some time it's a nightmare. is this because faulty PSU or motherboard/CPU problem? these are my specs
Intel pentium 4 HT 3.06 1mb LGA 533fsb
Asus p5pe-vm mobo
1GB ddr1 200mhz (512+512)
Asus nVidia geforce 6200 128mb AGP (currently using DVI port)
Hitachi 500GB sata HDD
LG Dvd ram
Mercury Combo (and have 3 additional fans to cool down)
Please help
Intel pentium 4 HT 3.06 1mb LGA 533fsb
Asus p5pe-vm mobo
1GB ddr1 200mhz (512+512)
Asus nVidia geforce 6200 128mb AGP (currently using DVI port)
Hitachi 500GB sata HDD
LG Dvd ram
Mercury Combo (and have 3 additional fans to cool down)
Please help