Machine is restarting continuosly! please help!

Hi there.

I'm very glad to found you, you are like the internet lifesaver, thanks for exist and all the help provided for the community, i have a recently problem with my pc being restarting after some 15 min or less, and anytime i run an AV symantec or Ad Aware antispyware the machine restart......also i was experience some crashing and then i found the file esbk.mb in the sharing documents and sometimes in local c, after i deleted them i notice the computer more fast, i have to admit the esbk.mb file is bothering me almost a year, i have the hijackthis , symantec and adaware installed in my pc, but the lastest 2 seems to don't finish the job.

i detected this like a run up every time the computer restart:

h key local machine
kernel fault check
key: sotware/microsoft/windows/currentversion/run/%systemroot%system32/dumprepo-k

Can someone help me please, what i'm doing wrong? what i need to do?


Thanks in advance!