- Check the keyboard to ensure that there are no stuck keys and no keys are being held down. Run your fingers over the keyboard to free any keys that may be stuck. If a drink was spilled on the keyboard, replace the keyboard with a new one. Try to start the computer again after completing this.
- Check all cables connected to the computer and make sure they are fully plugged in. Inspect each cable and securely connect or tighten cables as required.
- Remove any objects blocking the computer’s air vents. If dust has accumulated in any vent, vacuum the exterior vents and carefully vacuum dust from the heat sinks and vents inside the computer.
- Disconnect external devices such as printers, USB sticks and hubs, remote receivers and external drives. If the computer starts without external devices connected, one of these components may be defective. Reconnect them one at a time to identify which device is defective.
- If a computer will not start when a USB stick is inserted but it starts without the stick, update the Boot Priority settings in the BIOS so that the default boot device is the hard drive.
Many times the problem can be due to internal components:
Ensure that internal hardware added to your computer recently, such as additional memory or a video card, is installed correctly. Turn off the computer, then remove and re-insert the new hardware ensuring that each component is firmly seated in its slot.
Listen to the no. Of beeps
If 1 beep –it is the problem with the video card
if 2 to 3 beeps – It is the problem with the RAM
if it beeps continuously – It is the problem with the processor
Try cleaning them it and reinstalling, it will solve the problem.