Solved! hp probook 455 g1 black screen caps blinking 1 time

[hartuk]

Hello so as i said in title when i turn my probook on it's only black screen and caps lock is blinking 1 time fan is at full speed I tried everything, reseating RAM, CPU, cmos battery, hdd... tried on external monitor, tried hard reset, tried w/o cabel , w/o battery... on hp site 1 caps lock blink means that cpu is non responsive but I also called hp service and they told me that it doesnt need to be cpu that it can be gpu, or motherboard and I'm not realy sure should i trust them... should i try puting diffrent cpu?

CPU: AMD A8 5550m
dual gpu 8700 series + cpu's
12 GB RAM

 

[mshtaqq]

I just found two dump files for hartuk. I.e for HP 455 g1 :

I believe one is for amd and one is for i5 version.....

https/www.4shared.com/file/jGRLLwCVei/HP_455_AMD_New_MCS.html

https/www.4shared.com/file/eucfYkKYca/HP445-12240-1.html

goodluck with that hartuk....

and thanks to pro advisor Fagetti