I CAN SEE THE CPU FAN RUNNING, but i cannot see anything on my monitor,i mean my monitor is still in sleep mode
1) If the monitor has a removable monitor cable, and you have a Known to be good one to use for a test unit, try it. If it isn't removable, try another Known to be good working monitor.
2) If the monitor cable, and the monitor proves to be good, the next thing to suspect would be bad graphics.
Bad Integrated graphics on the motherboard, or if a graphics card is used, a bad graphics card.
3) I suspect it is a bad Power Supply. An issue that comes up so much, that I would skip 1 and 2 above, and check the Power Supply.
A) ALL of the LED lights, mumba_mwaba, use less than 1 Watt of power when in use.
B) EACH fan uses 2 to 3 Watts.
C) A typical Processor can use 51 to 125 Watts. Depends on what Processor it is.
(Older processors such as a Pentium II for example use less)
Enough power to light LED lights, and spin fans, (Or spin a few times and stop), but Not enough power to turn the Processor on.
This is why you may see LED lights lit, and fans spinning, but the computer isn't working.
The computer isn't sending a video signal to the monitor.
Do you have a KNOWN to be good, compatible Power Supply to use for a test unit?
May sound far fetched, but perhaps there is someone who has upgraded to a better computer, and has a computer they're not using, and you could borrow the Power Supply for a test unit.
Oct 29, 2010 |