Randomly shuts down - Microsoft Xbox 360 Console

Hi Grace, The link below is a short youtube video showing how to test and fix a car that shuts off randomly, Hope this helps.....
CHEERS..
Fixing Car That Shuts Off Randomly

Sounds like your taxing your system too hard. Perhaps you need to purchase a beefy-er CPU, graphics card, or cooling fan.

maybe it's a motherboard problem

I had a 1988 dodge Dakota ,and it did the same thing. I fould that the o2 sensor was bad. I am a self employed mechanic

Make sure you don't have any unecessary programs loading up into windows when your laptop boots up. The next time the system randomly reboots check to see if the laptop feels a bit warmer then normal. Could be that your air vents are being blocked by dust. That would cause the air not to flow properly. Take a can of air and blow the vents clear so the air can flow properly and that would take care of the problem.

Possibilities:
1. overheating, and automatic shutdown.
Check that the fans are working.

2. bad RAM, causing "random" crashing.
On a "good" computer, download the free 'MEMTEST86+' software, and run it, to test your RAM.

3. Leaking capacitors on motherboard, causing "voltage-spikes", leading to "random" errors.

4. Bad disk-drive. Remove the disk-drive.
Connect it as a "slave" drive in another computer,
and run 'CHKDSK' ("Check Disk") to look for problems.

CHECK your system for virus.

This problem might be occur due to old BIOS version installed on the laptop.
If your system shut down unexpectedly within 10-20 minutes while playing games or scanning the system which takes high cpu usages then the problem is of BIOS and try to install the new BIOS version.
for that visit the site of your laptop company.

The PSU voltages can be checked with a digital multimeter at the ATX connector, 3.3v (orange), 5.0v (red) & 12v (yellow) if the DMM is indicating values of MORE than 5% variation your PSU is the likely villain (best to rule it out first).

Are you getting a BSOD (Blue Screen Of Death) or error messages when you PC randomly shuts down?

the battery on your psp might be fried and is it at a certain point in a certain game or is does it just shut off randomly? if it shuts off randomly, then try plugging in your psp to the charger and then play a game for a while. see what happens