Computer Not Powering On

[KDu]

Hi, I have a really old computer running on a duron 900 with 256mb pc133 ram that I'm assembling. When I try to power it, it turns on for a split second and then off again. I've tried two separate PSU, which I know both are good. What can be causing this problem?

 

[lenjack]

Need more info...motherboard, power supply, operating system, etc. Are you sure all the parts are functional? Is the heatsink fan plugged into the proper header?

 

[KDu]

Motherboard is old Gigabyte with VIA 133 chipset, powersupplies are 300watt and 450watt (works perfectly on my other systems), OS wouldnt matter since it cant even startup...

 

[KDu]

wont even start with just ram/cpu/videocard.. could it be the mobo? i mean even a bad mobo would still startup but may not display anything

 

[nick1985]

sounds like metal is touching the motherboard and shorting it out. make sure there are no prongs from the I/O plate touching the motherboard, or any other metal.

 

[KDu]

thanks nick, you were right. took the mobo out of the tray and worked fine.

 

[nick1985]

Originally posted by: KDu
thanks nick, you were right. took the mobo out of the tray and worked fine.

good to hear. :beer: