FPS Drops In almost every game i play please help

So my pc sucks a bit and its already kinda old, my old PSU broke so i had it replaced by one which is a bit weaker (420w my old one was about 480w i think), but i had no problems playing games (my main game is League of legends), just a bit of fps lags sometimes, but later i found a way to play with 0 fps lags, by closing all the processes i dint need and only leave the things i needed on, but a few months later i started noticing small fps drops (from 30-45 to 10-15) and now i get a insane drop (35-50 to 2-4) and i dont know whats causing this, i already got told i could be the voltage or the temperature... i dont know where the problem is, i hope you guys can help me... My info is on my profile but ill leave you with the things i think its important:
PSU:Thermaltake Purepower
Model: HPC-420-102 DF
RAM: 2gb
Processor: Intel Pentium 4 CPU 3.00ghz
Temperature of the CPU- 66ºc (when playing is 72)
Voltages(BIOS checked):
Vcore:1.168V
DDR18V 1.808V
+3.3V- 3.424V
+12V- 12.175V

Hope you guys can help me, ill leave the DxDiag on attachments

My temperature, is still the same, doesnt go above 72... While not playing the temperature goes from 50-66

temperatures and PSU doesn't count in a Pentium 4 system.

What graphics card have you got?

Raedon X1550 Series
And the drivers are up to date

Your pc is really a low-end one... Don't expect to play new games at high framerates. Try disabling Windows Aero effects.

What games are you playing with this pc?

League of legends is constantly improving its graphics so even on lower settings, you'll begin to experience more and more lag. It seems that you may not have enough vRam during memory intensive periods (like during teamfights). One thing i used to do on my old PC was disable all the unnecessary things hogging up the memory.

Try the following:

1) Go the the start menu and type "system config"
2) Under the startup tab, click "Disable All"

The next time you start up your PC, all the background programs that usually start up automatically will not open until you decide to open them manually.


1) Computer --> System Properties --> Advanced System Settings
2) Under "Performance" heading, click settings
3) Choose the option "Adjust for best performance"

This will disable your windows aero as well as any other aesthetic looks to windows. This will make your windows somewhat like Windows 2000, but it will increase performance and free up a lot of ram. Also you may be able to revert back at any time after your finished gaming so it wont be that irritating :P

I used to only play League of legends, but now i play Gunz but im planning on unnistaling, and PES 2012, but it used to roll fine on this pc until i started getting the fps drops, if i recall the drops started since i installed PES, but i dont know how that can be a problem

NikDorado said:

Your pc is really a low-end one... Don't expect to play new games at high framerates. Try disabling Windows Aero effects.

What games are you playing with this pc?

I already tried disabling Aero, but that dint really helped in terms of gaming i just got the pc faster while not playing, i just got the drops less frequently and drops a bit less, but still, it drops hard

Unnistalled both PEs and Gunz and i still get the lags... Im on a programming course, and i talked to few of my friends and some of my teachers, they said its not the PSU but something else... I really dont know what can it be