Multiple stop errors on Windows 7

Hello,

I am getting a lot of stop errors from my PC. This started about 3 or 4 days ago.
I`m using the same version of Windows and same software for 6 months now and this never happened before. I really can`t figure out what could be causing the problem. Since the problem occured I did the following:

- reinstalled windows after which I installed the audio driver and canon driver only and the basic software(movie player, winrar, office etc. - i always install this)
- moved the ram from a slot to another
- disconected the dvd-writer and a fan from the PSU to check if the problem was caused by it
- cleaned up the dust from my pc

Nothing helped.

I`m still thinking that the problem may be caused by my PSU, which I have changed a few months ago, because the original one stopped working. This one is older than the original one, and maybe it doesn`t support all the hardware. But if this is true, why didn`t the errors occure until now?!

Anyway, I have attached 5 dump files. I have 18 more left. In case you will need them, I will attach those as well. Maybe you can have a look at them and give me an answer. Thank you very much!

P.S.: My pc is 5 years old!

Best regards,
Tiberiu I.

I would say try another power supply hopefully newer than 5 years old. Why did the errors start now? Because the old power supply degraded just enough to start the errors...