Updating the bios for a new power supply
For more information see #Troubleshooting_power_problems. Note that the Pi has no BIOS, so nothing will be displayed on screen unless the Pi successfully boots! See the next sections for how to interpret other statuses. A blinking red power LED indicates problems with the power supply.On model A and B, it is hard-wired to the 3.3V power supply rail. (The Boot Problems Sticky)" in the troubleshooting section of the Official Raspberry PI forum  it contains the latest info about "Red power LED is on, green LED does not flash" kind of problems.
2 weeks ago I made the faithful decision to buy it.The most recent examples of new connections are SATA and PCI Express.If you own a computer that is more than five years old it may not support them, and that means you won’t be able to use a SATA hard drive or a PCI Express video card without an adapter.I bought a Sony laptop because I was in the process of moving and searching for a house, therefore mobility is yet again the primary factor.6 years later, my Sony laptop is dying.There are spots of dead pixels on the screen and the overall system is very sluggish even after a clean format, I even went to the extend of vacuuming the internal components of dust but it remains sluggish.