My machine is a Presario CQ42 Pentium T4500 i would like to know which betterprocessor i can upgrade

[vksinghdeo]

My machine is a Presario CQ42 Pentium T4500 i would like to know which betterprocessor i can upgrade

[Huffer]

Here is the Service Manual:

Manual 

If you have the UMA video models 100-149 then you have the GL40 chipset which means you already have the top compatible processor. If you have the discrete model or the 150-199 model it has the HM55 Express chipset and can take up to an i7-620M. Try running Speccy or another specification tool to see which chipset is in your motherboard. 

[Paul_Tikkanen]

@vksinghdeo 

If your notebook has the Mobile Intel GL40 chipset, you can also install the Pentium T9500, T9300 or the T6600.

[vksinghdeo]

it has GL40 chipset

[vksinghdeo]

GL40 chipset

[Paul_Tikkanen]

Then you can install any of the 3 processors I posted the other day, or any of the Pentium processors with an 800 MHz FSB such as the T8300, T8100, or T6400, 

[vksinghdeo]

its motherboard is hp 1484

[Paul_Tikkanen]

I've given you all of the information I can.

The motherboard number you posted is immaterial.

It's got a GL40 chipset.

That's all you need to know.

That chipset only supports Pentium processors with a maximum FSB speed of 800 MHz.