CPU starts but monitor displays no signal.

[Danny Petrov]

my PC:

CPU: amd athlon x2 245 dual core
GPU: Nvidia GeForce Zotac GTX 570 1280mb 320bits.
RAM: G.Skill Ripjaws series 4x2 ddr3 1600Mhz Overclocked to 1600Mhz.
MotherBoard: ASRock 990FX EXTREME3.
Power Supply: Corsair CX600 600WAT, (80+).
HDD: Western Digital WD Black 1TB 7200 RPM SATA.

I bought the AMD FX 8150 3.6GHz processor and installed it perfectly, the CPU and whole computer starts but monitor displays no signal. now I have to use my old "amd athlon" because it works fine.

Is the cpu damaged somehow ??
Or may be I need to uninstall my motherboard drivers, install the CPU and reinstall drivers again?
And I have unparked my cpu "amd athlon" with "cpu unpark app" before, is this the reason my pc can't apply the AMD FX 8150??

Please help me

 

[Africa_PC]

That is a possibility. Have you tried to reset the bios with the jumper on the board ?

 

[Danny Petrov]

Yes I Already did that, just needed to reset CMOS CPU works fine now. ty)