Motherboard Dead

I used a computer for five years. A few months ago it is found dead. While checking, the fuse of the Power Supply Unit is found burned and faulty. I replaced with a new PSU but the PC is not turned on. No LED get lights, no fan mooves. It is noted that the Power switch connected with Motherboard (Bio Star) is ok. Now, what is the way to detect the faulty section of motherboard.

Hi,

Try unplug the ATX connector from motherboard, HD, CD floppy ... etc

Check first if your new PSU is still alive :
- take ATX connector in hand
- locate Green Cable (PS_ON - PIN14) and short it with a Black one (GND - PIN15 ou 16 or 17)



Let see if fan spin on PSU.

WARNING don't short other cable or your PSU will fry - ONLY GREEN AND BLACK

If it spin you can try tu use this tips to force the motherbord to working but be sure you have fresh Termal Paste on CPU and CPU Fan well seated, and your finger on the ON/OFF switch of the PSU.
But this tip give no warranty at all , at your risk. But this method starup my dead mobo.

Hope this help

Tricky to know exactly what is going on with this pc without knowing more about what you might have tested. without any other power supplies or machines to swap parts, I also recommend to test the current PSU for its readiness.

With pc's 5 years or older, pretty much anything could go wrong. They just aren't built to last for many years. If your refrigerator were built like a PC, you would prolly be afraid to eat anything out of the freezer after About 2 years.