MicroATX motherboard work but the monitor shows a black screen.

Go to this link and download the motherboard manual. It will show what header pins on the board attach to your various panel connections.
ECS Web Site 945GCT M3 V3 0

bad monitor none told but 2010 and older have CCFL lamps that 99% are all dead now, EOL>
test old monitor on other good PC, to see if monitor is bad
and see if the monitors OSD button is dead if is the monitor is dead.
power on mon, under15seconds hit menu and OSD must pop up.
that is 1 of 20 causes I can do 19 more and 19 more tests but I full stop here.

CCFL lamps die at 20000 hours, even 5 years old possible.

it is in cmos you need to go there hit the delete key on startup ok

The RAM module/s may be faulty or need reseating.
When you reseat the RAM and the computer still does not boot up then remove the RAM and take them to your friendly computer repair shop and get them to test the RAM for you. If the RAM is faulty then you need to replace the RAM.

driver&manua minboard

One bad lead can cause a computer to continue on a cycle or to shutdown or fail to detect your hard drive

Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your motherboard to your hard drive make sure they have a secure connection and are not faulty or just replace them there probably old and faulty

hope this helps

just make sure you have connected it properly and then connect the monitor wire to pci card ..thats it ..it has to work if it didnt work remove the battery in the motherboard and put it back again after 20 seconds..

Hi,

You can enable it again, just goto control panel, open network connection, there will be local area connection icon, Right click on it and click on enable.....

If there is problem again use motherboard cd and install lan card drive again...

No to the cpu you selected. Board would not support that cpu. The RAM you selected would probably work but for how long I couldn't say. With prices pretty low right now it would probably be better to purchase a new motherboard, cpu, & RAM. Hope this helps.

try to reconect your cable from your cd room or check for right cable that you put.