Computer not starting

[okkalangba]

good day guys, i have a problem with my cpu yesterday.. i've clean my cpu all the parts was remove.. just like vc,cpu fan,memory,lan card,sound card and processor , i was changing the thermal compound in my processor, .... and after that i install it again all the parts coz i was finished cleaning it for the maintenance, now i RUN my cpu then it goes to the bios only, but not in the main bios it's in the motherboard picture, then its not continuing, after that i check again my cpu config if i miss something, so i config my hdd the prImary ide, now i start again my cpu , goes to no beep , black screen, but the cpu fan is running , the sb_light on my motherboard have a light ,

any help? what should i do?

cpu specs:

motherboard: p5nsli socket 775
ram: 2GB ddr 2 667
video card: 512 Mb nvidia geforce 9400 GT
processor: intel core 2 duo e7400
os: windows xp
hdd: 41 gb ide primary, sata 80 gb

 

[Tmagic650]

Try resetting the bios, by motherboard jumper or removing the CMOS battery making sure the computer is unplugged from the wall for a few minutes