Can a mosfet replacement slow to 500mhz in BIOS I3

[marce002]

Hello

I have a generic medion like laptop core i3 (Tcl rca is the brand) which shows 500mhz in bios at cpu speed.
I have received it with no power at all. Found it to be a mosfet in 19vol line close to the power jack and also a capacitor around the vcore which was shorted i think close to vcore power supply. I ve dound NO schematics fof it. It is a c14d motherboard rev2.

My Question is:

I ve placed a N channel mosfet 8A which is FDS884 to replace the 10A original which is SM4839 one and also placed a similar small capacitor in place instead of the broken shroted one which cannot measure or figure out what uf is it.

So my question would be can my new mosfet or the capacitor replacement be causing this 500mhz in bios? or maybe it was a problem before comming here?

Power adapter is original and same result if pluged to my lab power supply.

Thanks for any hint.

Original mosfet: SM4839
Replacement i put: FDS884

And here is the picture to the capacitor zone.

[ktmmotocross]

Re: Can a mosfet replacement slow to 500mhz in BIOS I3

if is voltage ok than i think it is not related to fault

that FDS is way better than SM



test procesor speed in system or under load.

[marce002]

Re: Can a mosfet replacement slow to 500mhz in BIOS I3

Thanks... nope still 500mhz stucked in bios.... i tried with temporary mosfet bridge and same results in windows and bios.... benchmarks in windows shows 488mhz... and it is an i3 2.53 ....sad..... should vcore volt the culprit? Or bios programming?

[ktmmotocross]

Re: Can a mosfet replacement slow to 500mhz in BIOS I3

reprogram bios, check thermal sensors, voltages