Problem with No$GBA

Hi all.
I'm new in this forum:bouncy: .
I've a problem with this emulator (no$GBA)
When i open it,and load a rom,after 2-3 minuts the PC reboot but i can't think the reason .
I use this emulator becouse have a good speed.
I've try also iDeas,it's stable,but it's to slow.
How can i resolve the problem with no$GBA?
Thanks.
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My PC specs:
-Pentium 4 3.0GHz with HT (Hiper Trading)
-1024MB RAM DDR;
-ATI 9550 256MB (ps 2.0) (450 MHz core/270MHz memory)

Thanks:bouncy:
Yes,it only happens when i use no$GBA. (i think it isn't a problem of alimentation)
I use "Antivir Personal Classic Edition" it work while i use no$GBA.
I've see the temp of the CPU during the emulation but it's normal,around 60°C.
I've see this problem appear only when i run "Pokemon Perl".
Sorry for bad english arty:
Thanks.

I've found this's a problem of temperature of CPU...:blink: