My computer turns off automatically!

intel celeron?? tried to play crysis? lol
dude and the ram is quite slow for 3d games...(depends wut game u tried to play)
hmm as u said when u play a 3d game it shuts down, id say its a damaged vga...or mobo overheat??

My cpu shuts itself after sometime opening it.I need some help plssss

You can try this .it might be due to overheating of your cpu.notice if all the fans inside are clean if clean them.If it dosent help check the thermal material between processor and heatsink if damaged get it replaced immidiately.

---You don't ever "check" the thermal compound between the heatsink and CPU. Either you replace the compound with fresh or you trust that the builder of the system installed it correctly.

---It'd be nice if you noted that once you remove the heatsink from the CPU, the thermal compound will need to be replaced with new/fresh. No ifs ands or buts, and it needs to be replaced correctly.

---Chances are, if CPU related, it's just dust in the CPU heatsink cooling fins, which is cleaned by removing only the heatsink fan.

--Also, another reason why playing with the PCU heatsink is a bad idea if you don't know what you're doing, Celeron and Athelon CPU chips had a habit of chipping if you didn't install the heatsink perfectly straight & square. The CPU will be garbage if you hear a crack resembling the snapping of a very sharp, carbon, pencil lead.

It looks like you cpu is overheating, if it turn off when you play games. You don't need to replace you video card. Just put better termal compaund between cpu and heatsink and check cpu temp with everest software. You can stress you cpu with everest and see the result.

Good luck