Can a fried CPU lead to.....?

your chip is bad, if the fan died there will be no question of that

To me, your symptoms seem to point to a bad motherboard. But then, the CPU fan quitting is a huge red flag screaming "look at me". I suppose it's possible that a bad CPU could mimic a bad mainboard, that's logical. It's just that CPUs fail so infrequently, it's tough to say what symptoms a fried CPU would exhibit, if it doesn't just die completely.

What should you replace first? If the system was less than 2 years old, I might offer some advice on what to replace first. At exactly 2 years old, you'd have a tough (very tough) decision to make which would boil down to...do I want to fix this, or replace it? But at 5 years old?

I'd say the first thing you replace is everything except the monitor, perhaps. You might even want to replace that. The monitor, I mean. If you've got a decent flat panel LCD monitor of 19" or larger, keep it. Other than that, it's time to start over with a whole new computer system.

Note that there might still be some good parts in that system. But at 5 years old, probably every component is reaching the end of its useful life. It's not worth repairing.

I had the right comparable subject some days in the past. Powered up, and when I had to hearken to the BEEP meaning that the BIOS replaced into loaded and all instruments are working (if it is the defective RAM, you ought to get 3 long beeps, if it is the video card - a million long and a couple of short beeps, I heard no beep in any respect), it went off. What I did replaced into tighten the screws of the Spire Fourier IV too a lot (it is have been given its very own plate in the back, so I quite bent the main state-of-the-paintings records street on the motherboard). as quickly as I released the screws, it labored, however the computing device stored turning off now and back. My chum additionally had those matters with an older computing device. In the two circumstances, the motherboard had micro fissures. Cracks, which did no longer enable sign to return and forth by using a understanding street. Your motherboard ought to have experienced some form of stress (heavy warmth sink, too a lot messing with RAM, scratches or something, or only overheating). The CPU is fairly no longer uncomplicated to break, whilst the MB is extremely fragile. i'm making a gamble each thing in this verdict.

if you got another pc that you can change the parts around you can troubleshoot all of it. a vaio is a pretty expensive machine, but you COULD just get a new puter for 300-400 bucks these days.

Then you can just sell off your vaio on ebay or something, and come out pretty good, even if you have to sell it a piece at a time

It is possible that the CPU overheated. I find it odd that the "pro" did not discover the bad fan. Note that it usually does not pay to fix a 5 year old computer unless you can do it very cheaply.

If your were getting the message "Operating System Not Found" your CPU is fine. If your CPU was bad then you would get nothing. Now your Hard drive might be going bad or the Master Boot Record (MBR) might be corrupt.

Try plugging in the hard drive to another computer to see if the data is corrupted, or if the operating system is actually there. That should help you narrow it down.

plug the fan in. The cpu will bsod to save it self. It could still be good but cannot run because of heat.

no fried cpu means your pc won't even boot