PC freezes and/or BSOD

The problem started when I tried to run a Malwarebytes scan; the pc just froze. I had to press the reset button because although keyboard seemed to function no action could be taken with it.
Tried a couple more times to run malwarebytes scan with the same result. I booted with a different windows (Windows 7) boot, but although I ran malwarebytes scan with no problems (I quarantined the found viruses), when I booted with windows xp (the one with the problem) I once more couldn't run malwarebytes scan - pc froze. Also even when i didn't do anything and just left the pc idle for one night, the other day I found it under o BSOD. I think but not for certain that sometimes google chrome caused pc to freeze.
I started the"Windows XP Malware Removal/Cleaning Procedure" proposed here, but I couldn't proceed to step 2 (malwarebytes), so I tried to uninstall and reinstall malwarebytes, and after that it worked. I proceeded to the next steps with no problem except MGTOOLS wich while running made the pc to reboot and thus was interrupted. I tried to run it once more and succeeded with no further problems.
When rebooted the system ran ok for about 10 minutes and then when i tried to watch an mp4 file on kmplayer (and while running in the backround: bitcomet, firefox, avast, superantispyware, sb s&d resident shield, cccleaner)
the pc gave me another BSOD.
So, the problem wasn't solved.
After posting results of the 5-step guide for malware removal (which found nothing) on the malware treatment section, I was prompted here.
So, I am waiting for your guidance

 

We won't know what caused the BSODs until someone can analyze the .DMP file(s). Go to the C:\Windows\minidump folder and attach any .dmp files you find there as .ZIP archives to your next post (you can have up to 5 attachments). There's also a utility called Blue Screen View available here at MG's but, it doesn't give all of the information contained in the dump file(s).

 

First of all, thank you for the quick reply
although I had SB and bitcomet running almost 24/7 in the backround before the problems started (and cccleaner was installed after the problems started) I will try without them running costantly, but this I don't consider it a solution, it's a compromise.
I also went to minidump folder wich is empty. How can this happen ?

 

Go to Start and right click on My Computer and select Properties. Then click on the Advanced tab and in Startup and Recovery click the settings button and set things as in the att'd (my screen is set to high contrast because of bilateral cataracts). If CCleaner is cleaning system logs, disable it. You should then have minidumps you can attach.