few days before i have enterd wrong psu voltage in my earlier psu. Now ihave bought a new one and it is working but there is slight more vibration in my screen it was not earlier.at starting only it beeps.and its not now
few days before i have enterd wrong psu voltage in my earlier psu. Now ihave bought a new one and it is working but there is slight more vibration in my screen it was not earlier.at starting only it beeps.and its not now
So your computer is still able to function? If it lags in games, could be due to the processor overheating. Make sure that the cooler sitting on the processor is tight and the fan spins when turned on.
You can't really "enter a wrong psu voltage" perhaps you meant voltage settings in the BIOS? You should not touch the settings in the BIOS as it can cause problems and parts to fail.
Disconnect all non essential components like the the optical drives, speakers, sound cards, and run with only one memory stick. If the problem is still happening, it probably means either your PSU, mobo, graphics card, or hard drive is damaged.