There are many reasons why a computer won't turn on, but a complete loss of power is not the worst-case scenario. There is a chance that your computer isn't receiving power because of a serious issue, but it's unlikely. In most cases the Power Supply Unit (PSU) requires repairing or replacing.
Bring your computer in and we will carry out the service and then contact you when it’s ready for collection.
Sorry but this service is not available on-site, please choose from either our bring-in or pick-up services instead.
Faulty power supply units can cause desktops, laptops & tablet computers not to power on. Even if it appears that your computer is receiving power, lights are on, fans are running or even if it powers on for just a moment this can be caused by a faulty PSU.
Yes, basically your computer will boot successfully but then the graphics card will require additional power, the power supply will not have it and this could cause your graphics card and other components to overheat.
Yes, if your power supply is not powerful enough for all the components, the performance will be negatively affected. It won't work or it might work for simple things, then fail when your graphics card tries to power up a graphically intense application.
No, a power supply unit doesn't directly affect performance in that way, but it can affect performance if your system begins to throttle down when the peak load is going above the load the power supply unit can provide.
If it is intermittently unable to meet the required voltage levels, you will see many different symptoms depending upon what voltage is bad and by how much. If the voltage to the processor is too low, the current flowing through the processor will increase causing increased heat dissipation, modern processors will slow down if a high temperature is detected.