Fan on power supply is bad

You must firstly install an operating system, assuming there is a hard drive/ssd fitted.
If no hdd fit an hdd and then place an operating system on it.

It should fit. Check the motherboard manual to see which CPUs will work in it.

This model simply requires the removal of the purple screw in the back side of the pc. Then, the side of the case would pull towards you.

You need a expert. Thank you.

make sure there is no disks in any drives

Use this link and click detect my model on the right.

http://esupport.sony.com/US/perl/select-system.pl?PRODTYPE=1

Usually there is a switch on the back of the power supply that turns the supply on or off. Make sure it is turned on. Try using a different 3-prong cord between computer and outlet.

Generally, fans are controlled by heat readings...something to check is the operating temperature that is shown in your BIOS when you boot up...(access your BIOS by tapping on the delete key, or F2 key while booting)..if it goes over 70C real quick then there is a CPU heat dissipation problem, which would cause the fan to run like this i think that it is more of an issue that your CPU died...has your machine taken any kind of hit or fall that might have loosened things?...or perhaps the heat sink compound between the heatsink and CPU failed.....
but it also could be a dead MB

unplug it completly and then replug it the chk if not chk for any error mesg lights etc and then let me know or mail me at [email protected]

first, did this problem suddenly appear?...or was it slowly getting worse? It sounds like an interrupt problem with the video hardware. If this problem suddenly appeared, then boot Safe Mode and then run system restore to date just before problem occurred. If this came gradually, then solution is same as above except finding date will be more difficult and trial and error routine will be necessary.