When I press the start button fan are working but no display output

Hi @pmkasun,

Have you tried a connecting a different, known working monitor just to prove that the monitor (monitor cable?) is not the problem?

If so try a power refresh in case it is a corrupted BIOS that is preventing a normal start.

• Disconnect the power to the PC and then open the PC case and locate and remove the coin cell RTC battery from the motherboard. (When the battery is out, measure its voltage. If it is <2.5V DC replace it. The battery model number should be stamped on the battery itself e.g. CR2032, etc).
• Press and hold the PC's power on button for a full 30 seconds and then release it.
• Reinsert the RTC coin cell battery back onto the motherboard (usually +ve on top)
• Reassemble the PC, reconnect power to the PC and try turning it on and see if it works OK.

If it works OK there may be a message saying that the date and time are incorrect. This is normal as the BIOS has been reset back to its factory default state. Once the d&t have been corrected the message won't appear the next time the PC is started. Also if any user definable settings in BIOS have been altered by you, to suit whatever operating requirement you have, they will have to be changed back to what they were as they have also been reset.