Wire diagram for inside HP 8300f

May 14, 2011 at 19:16:04
Specs: Windows XP
Replaced motherboard and want to check all connections. When power up fans are on but seems nothing else on including light for on switch. Small indicator light is on.

See More: Wire diagram for inside HP 8300f

Report •

May 14, 2011 at 19:26:03
Is the system booting or not? Are you sure the board was the problem? Did you benchtest it before you installed it in the case? Are the plugs for the case wiring labeled? Are the pins where they plug into the board labeled? Did you google for "front panel wiring"?

Report •

May 14, 2011 at 19:34:58
The old motherboard had bulging caps. I had no way of testing but the board is new. I an intereste that I got all other items plugged in right in addition to MB. It does not boot up. Thanks as I have limited tech knowledge. I do enjoy trying befor buying a new comp.

Report •

May 14, 2011 at 20:27:51
"I had no way of testing but the board is new"

You should always benchtest a board BEFORE you install it in the case. That's to confirm that it works & that you've installed the CPU, heatsink & RAM properly. It would be pointless to install a non-working board in a case, right? And if a mistake was made when installing the CPU, heatsink or RAM, it's much easier to get at them when they're out in the open, rather than reaching inside the confines of the case.

Here's how to perform a benchtest:


Here's your system specs:


Did you at least get a decent board or did you go with an HP replacement? If it's a non-HP board, post the make/model. Also, it's very important that you apply thermal paste between the CPU & heatsink & it MUST be done correctly. AMD CPUs use the "middle dot" method.


Report •

Related Solutions

May 14, 2011 at 20:34:02
thanks for reply, I will try to work on again tomorrow.

Report •

May 14, 2011 at 23:36:17
If it is the same model motherboard then obviously everything will connect as with the old one. Those connections should be described in the HP manual for that model.

If it's a different motherboard then get the manual for that model. For the front panel connections you may need to trace the wires to the panel and see which LEDs or switches they connect to but usually the connectors are labeled. When polarity matters it's usually the colored wire (red, green, etc.) that's positive.

Ding dong the witch is dead. . . .

Report •

May 15, 2011 at 07:42:41
If you substituted a different model for the original board the board may POST but MAY not boot into Windows. SLP versions of Windows are limited to work on the original motherboard. Sometimes you get lucky, sometimes not.

Report •

May 18, 2011 at 15:57:04
Finally back to comp and try to get it up and running. I did replace MB with like MB. After MB installed and everything connected the following is what is happening when try to load windows. ( After the MB install I can not recover windows. I do not have recovery disc. When I try recovery with F10 or F11 key when the HP screen loads I get following message. "The computer started unexpectedly or encountered an unexspected error. Windows installation can't proceed. To install windows click ok to restart computer and restart installation". I do have win 7 upgrade disc I plan to install when I get comp up and running.
Thanks for any guidance, as my comp knowledge is limited.

Report •

Ask Question