I changed my motherboard from K7S5A PRO to 75

Ecs (elitegroup computers) 755-a2 v1.0 m...
July 17, 2010 at 06:39:46
Specs: Windows XP
I changed my motherboard from K7S5A PRO to 755-A2. Whenever I switch on the PSU, the CPU fan, PSU fan, and DVD unit indicator light stay on, even with the FP1 connection disconnected. Computer does not power up.

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July 17, 2010 at 07:04:38
Did you benchtest the board before installing it in the case? If not, it's going to be very difficult to determine where you went wrong. Try the following:

- disconnect ALL external devices except the monitor & keyboard...in other words, no mouse, printer, speakers, USB devices, etc.

- open the case & disconnect ALL drives (HDD, CD, floppy)...both the data cables & power cables.

- remove ALL cards except video

- if you have two sticks of RAM installed, remove one of them

- make sure that both the 20-pin main ATX plug & 4-pin ATX12V plug are connected to the board

- hopefully you installed the heatsink on the CPU correctly. If paste had to be applied, you should have used a tiny dab in the center of the CPU about the size of a BB or grain of rice...that's all. It should NOT have been spread around. Just put the dab in the center of the CPU & lock the heatsink in place...that's all there is to it. If your heatsink had a pre-applied pad, you should be OK. If you used no thermal material at all, that *may* be your problem.

Once you've done all the above, try booting up & see if you get a display. If you do, use the keyboard to access the BIOS & configure all the settings. While you're in the BIOS, check your temps & voltages in the PC Health menu.

If the above doesn't work, remove the board from the case & benchtest it like you should have done in the 1st place.

How to Bench Test Your System

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