# Computer blips on, then does nothing

**URL:** https://forum.kirupa.com/t/computer-blips-on-then-does-nothing/208063
**Category:** random
**Created:** [November 24, 2006, 3:10pm UTC](https://forum.kirupa.com/t/computer-blips-on-then-does-nothing/208063 "2006-11-24T15:10:47Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![skOOb](https://avatars.discourse-cdn.com/v4/letter/s/8dc957/32.png) [@skOOb](https://forum.kirupa.com/u/skOOb)
#### Post date: [November 24, 2006, 3:10pm UTC](https://forum.kirupa.com/t/computer-blips-on-then-does-nothing/208063/1 "2006-11-24T15:10:47Z")

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I am putting a computer together with my old parts for my dad. He bought a case and power supply and I have everything else. I put the motherboard in (which had heatsink and cpu already installed) then ram. Hooked in HDD and Floppy drive. Everything looks like it is in the right place. When I turn the PSU on, the motherboard gets it’s green ‘ok’ light. When I hit the power button on the front of the case, the blue LED power light on the front of the case and the heatsink fan starts for just a split second, then goes off.

Nothing is obstructing the fan on the CPU, and the green light stays on the mobo. I don’t hear the HDD powering on…or the PSU fan for that matter. Seems like nothing is powering up. I had an old PSU that I hooked everything in to, and it did the same thing, so it isn’t that. I have built plenty of computers, but haven’t run into this problem before. Any help would be appreciated.