What is a comprobable power supply for a computer which previously had a TigerPro LC-B350 ATX ?
Most power supplies are pretty much the same. If this computer has a few years on it then any good ATX PS should work. If the computer is fairly new and runs a high end AGP or PCIe video card, then you will need a PS that has a 24 pin main board connector and a second 4 pin connector. As for the power or size, anything above 350 watts should be just fine.