Hi,

What is the CPU that is in the laptop now?

Do you have the old one to swap just to check if it loads fine?

Thank you

Hi DELL-GOKUL G

My old CPU  is intel T4200 here is its details,I re-installed it back and it works fine:

Pentium(R)Dual -Core- CPU,T4200@2.00Ghz,

E8448793 ,SLGJN

AW80577T4200

2.00/1M/800

below are the details of the new cpu:

Family	Intel Core 2 Duo Mobile
Model number	T8300

E827B290 SLAYQ

FF80577T8300

2.40/3M/800

Frequency	2400 MHz
Bus speed	800 MHz
Package	478-pin micro-FCPGA
Socket	Socket P
Microarchitecture	Core
Platform	Santa Rosa
	Santa Rosa Refresh
Processor core	Penryn-3M
Data width	64 bit
The number of cores	2
The number of threads	2
Level 1 cache size	2 x 32 KB
Level 2 cache size	shared 3 MB

I have windows 7 ultimate ,32bit,in my inspiron 1525 laptop

Waiting for your suggestion.Thank you.

Regards

That CPU should be supported - if it doesn't work, the CPU is likely faulty.