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· Registered
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Discussion Starter · #1 ·
I have an ACER ASPIRE T180 on Windows 7 ULTIMATE.

Spec : http://support.acer....reT180sp2.shtml

Problems booting up are:

No light on the front power button,
Red Hard-drive light comes on,
CD drive functions (can still open and close tray),
CPU fan does not spin on startup,
Can hear no noise from the motherboard on boot but i do not have SPK attached,
I have changed the PSU but the same problem occurs, ive also stripped the tower down cleaned all compontents/fans with a clean cloth,
taken additional RAM i have bought out but still i get NO INPUT SIGNAL DETECTED and CHECK SIGNAL CABLE on my monitors. *note: i have tried removing all additonals drives and PCI cards.

I recently installed an additional graphics card, and in the BIOS settings i may of changed the primary device to the PCI EXPRESS slot instead of the PCI slot where i have installed the new graphics card.

I now have two screens using both on-board graphics and PCI graphics connected and it still proceeds to show no signal,
Ive tried a CMOS reset but i am not sure i have done it right, i have changed over jumpers with all wires unplugged and booted system its self and also left the CMOS battery out the board but still no luck.

All help appreciated.


· Emeritus
51,728 Posts
Tear it apart again and bench test.
Set the motherboard on a non conductive surface. The motherboard box is perfect for this. DO NOT PLACE THE MOTHERBOARD ON THE STATIC BAG! It can actually conduct electricity!
Install the CPU and heat sink.
Install 1 stick of RAM.
Install the video card and attach the power supply connection(s) to the card if your card needs it.
Connect the monitor to the video card.
Connect the power supply to the motherboard with both the 24pin main ATX Power connection and the separate 4 or 8 pin power connection.
Connect power to the power supply.
Do NOT connect ANYTHING else. Make sure you have the power connector on the CPU fan connected.
Use a small screwdriver to momentarily short the power switch connector on the motherboard. Consult your motherboard manual to find which two pins connect to your case's power switch. Then touch both pins with a screwdriver to complete the circuit and boot the system.

If all is well, it should power up and you should get a display. Then assemble the parts into the case and try again. If the system now fails to boot, you have a short in the case and need to recheck your motherboard standoffs.

If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective.
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