need help with cpu upgrade

You'll find there are different system boards for this model -- the one that supports dual core only and the other, which has support for quad core CPUs.  The dual core board has two memory sockets, while the quad core board has four.  There are also differences in display support -- some support EDP screens, while others use an LVDS connection, so if you are now in the market for a board, buy carefully (or buy a complete used system, which likely won't cost much more than a board by itself).

@ejn63​ mine has 4 memory sockets though, 4 ram slots

Given the advanced age of the CPU and system, anything is possible, ranging from a CPU that's been re-marked to damaged pins on the CPU or a damaged CPU socket.  Do you have access to another system you can test with?

@ejn63​ nope this is the only laptop I have with an upgradable CPU, also the pins aren't damaged, they're all standing straight up, I also went to hwinfo and it does detect I have 4 cores and 8 threads but it also shows in another page that its 2 cores and 4 threads, I will post a follow up picture in a few mins if you don't get it 

@ejn63​ hello? I really need this help

You really need another set of hardware that you know works correctly to do any troubleshooting.  Assuming the CPU was purchased used, it could easily be damaged or given an unknown history, have been remarked at some point.  And you have a system that's over a decade old, so you could equally well have a damaged mainboard with weak voltage regulators or other components on it.

If your CPU supplier offered a warranty, have them swap the CPU as a first attempt -- if that doesn't solve the problem, the next step would be a replacement mainboard (or system, since as I wrote earlier you're likely to find the boards cost as much or more than a complete, working used system does).

@ejn63​ is it really a main board issue? The first picture on hwinfo recognizes it fully 

What does the Windows task manager show?  Does it show all four cores?

@ejn63​ im sorry for replying late always but nope, everything else shows it as 2 cores and 4 threads but the first picture that i sent on hwinfo recognizes it correctly

@Kinzamena​ @ejn63 look at the picture i underlined here

@ejn63​ hmm alright thanks tho :)