MSI afterburner underclocking itself

[takuminightcore]

I have a Sony Vaio vgn AR 850 E Series and I am having trouble with overclocking my graphics card it does have the capability to overclock but each time the MSI afterburner on a matically goes to 690 megahertz and core clock speed and 920 with memory clock speed But after when it hits 70 degrees C it automatically under clocks my system to 275 megahertz of core clock speed and 175 for memory speed I tried everything I could think of to fix it but it's still giving out the same issue I even remove the drivers that Sony provided me and recoat it to run on official Nvidia retail drivers if anybody can help me figure out how can I tell the system to not underclock itself to not usable speeds that be great my spec is a Core 2 Duo 2.4 gigahertz dual-core with Nvidia 8600 MGT and 4 gigabytes of ddr2 633 megahertz 5200 PC Ram and the temperature of the CPU and the GPU stay at a good stable during High load to 60 to 70 degrees C which I still have plenty of room before it becomes completely unstable to 90° C or higher

[r2724r16]

7 minutes ago, takuminightcore said:

Sony Vaio vgn AR 850 E

Why are you trying to overclock your laptop hardware? It'll hit power and thermal limits very easily.

[takuminightcore]

It is a very powerful laptop so I'm not worried about power commit if they can hold within a good 920 megahertz then really that's not the issue and thermal is not even near 90° C

[r2724r16]

1 minute ago, takuminightcore said:

It is a very powerful laptop so I'm not worried about power commit if they can hold within a good 920 megahertz then really that's not the issue and thermal is not even near 90° C

What's your power usage under load, and max power limit?

[takuminightcore]

Right now it's running on AC adapter but the laptop can handle about 330 amps of power and since it is a very old laptop it is not crashing it is not powering down or thermal throttling whatsoever